Merge branch 'develop' into techdebt/5725-lint-cleanup

Conflicts: - include/nlohmann/json.hpp: took develop's json_literals.hpp include (#5610) without the GCC C++20 -Wignored-attributes pragma pop this branch removes - single_include/nlohmann/json.hpp: regenerated with make amalgamate Also dropped the redundant semicolon from six CAPTURE() call sites that develop added in unit-allocator, unit-class_lexer, and unit-comparison, as this branch removes -Wno-extra-semi-stmt. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Take the JSON value by const reference in the array and tuple from_json paths
2026-10-01 04:00:31 +00:00 · 2026-09-30 20:41:18 +02:00 · 2026-09-30 20:03:29 +02:00 · 2026-09-30 18:55:40 +02:00 · 2026-09-30 18:43:30 +02:00 · 2026-09-30 18:32:13 +02:00
70 changed files with 1486 additions and 5428 deletions
@@ -1,9 +1,15 @@
-# TODO: The first three checks are only removed to get the CI going. They have to be addressed at some point.
-# TODO: portability-avoid-pragma-once: should be fixed eventually
+# bugprone-use-after-move (hicpp-invalid-access-moved is its alias) still flags
+# the basic_json move constructor, which forwards the whole object to its base
+# class (#5724), and two forwards in the error-message construction of
+# at(KeyType&&) (json.hpp, both overloads: find(std::forward<KeyType>(key))
+# followed by string_t(std::forward<KeyType>(key)) in the throw), which #5689
+# rewrites. Re-enable both checks once those changes have landed.
+# portability-avoid-pragma-once: kept disabled on purpose. #pragma once is accepted
+# by every supported compiler, and tools/amalgamate/amalgamate.py strips it from
+# single_include, so there is nothing left to fix here.

 Checks: '*,

-         -portability-template-virtual-member-function,
         -bugprone-use-after-move,
         -hicpp-invalid-access-moved,

@@ -37,7 +43,6 @@ Checks: '*,
         -google-readability-function-size,
         -google-runtime-float,
         -google-runtime-int,
-         -google-runtime-references,
         -hicpp-avoid-goto,
         -hicpp-explicit-conversions,
         -hicpp-function-size,
@@ -71,6 +76,7 @@ Checks: '*,
         -readability-magic-numbers,
         -readability-redundant-access-specifiers,
         -readability-redundant-parentheses,
+         -readability-redundant-typename,
         -readability-simplify-boolean-expr,
         -readability-uppercase-literal-suffix,
         -readability-use-concise-preprocessor-directives'
@@ -81,5 +87,4 @@ CheckOptions:

 WarningsAsErrors: '*'

-#HeaderFilterRegex: '.*nlohmann.*'
 HeaderFilterRegex: '.*hpp$'
@@ -78,13 +78,13 @@ jobs:

  ci_static_analysis_clang:
    runs-on: ubuntu-latest
-    container: silkeh/clang:dev
+    container: silkeh/clang:22
    strategy:
      matrix:
-        target: [ci_test_clang, ci_clang_tidy, ci_test_clang_sanitizer, ci_clang_analyze, ci_single_binaries]
+        target: [ci_test_clang, ci_clang_tidy, ci_test_clang_sanitizer, ci_single_binaries]
    steps:
-      - name: Install git, clang-tools, iwyu (ci_single_binaries), and unzip
-        run: apt-get update ; apt-get install -y git clang-tools iwyu unzip
+      - name: Install git, iwyu (ci_single_binaries), and unzip
+        run: apt-get update ; apt-get install -y git iwyu unzip
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
@@ -20,7 +20,6 @@ cc_library(
    hdrs = [
        "include/nlohmann/adl_serializer.hpp",
        "include/nlohmann/byte_container_with_subtype.hpp",
-        "include/nlohmann/detail/abi_config.hpp",
        "include/nlohmann/detail/abi_macros.hpp",
        "include/nlohmann/detail/bit_ops.hpp",
        "include/nlohmann/detail/conversions/from_json.hpp",
@@ -66,13 +65,6 @@ cc_library(
        "include/nlohmann/detail/string_escape.hpp",
        "include/nlohmann/detail/string_utils.hpp",
        "include/nlohmann/detail/value_t.hpp",
-        "include/nlohmann/detail/view/builder.hpp",
-        "include/nlohmann/detail/view/document_data.hpp",
-        "include/nlohmann/detail/view/macro_scope.hpp",
-        "include/nlohmann/detail/view/macro_unscope.hpp",
-        "include/nlohmann/detail/view/node.hpp",
-        "include/nlohmann/detail/view/scan.hpp",
-        "include/nlohmann/detail/view/string_ref.hpp",
        "include/nlohmann/json.hpp",
        "include/nlohmann/json_fwd.hpp",
        "include/nlohmann/json_literals.hpp",
@@ -1395,7 +1395,7 @@ THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR I
 - The class contains a slightly modified version of the Grisu2 algorithm from Florian Loitsch which is licensed under the [MIT License](https://opensource.org/licenses/MIT) (see above). Copyright &copy; 2009 [Florian Loitsch](https://florian.loitsch.com/)
 - The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).
 - The class contains parts of [Google Abseil](https://github.com/abseil/abseil-cpp) which is licensed under the [Apache 2.0 License](https://opensource.org/licenses/Apache-2.0).
- The class contains an adapted version of the Eisel-Lemire algorithm, its table of powers of five, and its digit comparison for long numbers from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
+- The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors

 <img align="right" src="https://git.fsfe.org/reuse/reuse-ci/raw/branch/master/reuse-horizontal.png" alt="REUSE Software">

@@ -8,24 +8,24 @@ set(N 10)
 include(FindPython3)
 find_package(Python3 COMPONENTS Interpreter)

-find_program(CLANG_TOOL NAMES clang++-HEAD clang++ clang++-20 clang++-19 clang++-18 clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11 clang++)
+find_program(CLANG_TOOL NAMES clang++-HEAD clang++ clang++-22 clang++-21 clang++-20 clang++-19 clang++-18 clang++-17 clang++-16 clang++-15 clang++-14 clang++-13 clang++-12 clang++-11 clang++)
 execute_process(COMMAND ${CLANG_TOOL} --version OUTPUT_VARIABLE CLANG_TOOL_VERSION ERROR_VARIABLE CLANG_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TOOL_VERSION "${CLANG_TOOL_VERSION}")
 message(STATUS "🔖 Clang ${CLANG_TOOL_VERSION} (${CLANG_TOOL})")

-find_program(CLANG_TIDY_TOOL NAMES clang-tidy-20 clang-tidy-19 clang-tidy-18 clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy)
+find_program(CLANG_TIDY_TOOL NAMES clang-tidy-22 clang-tidy-21 clang-tidy-20 clang-tidy-19 clang-tidy-18 clang-tidy-17 clang-tidy-16 clang-tidy-15 clang-tidy-14 clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy)
 execute_process(COMMAND ${CLANG_TIDY_TOOL} --version OUTPUT_VARIABLE CLANG_TIDY_TOOL_VERSION ERROR_VARIABLE CLANG_TIDY_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" CLANG_TIDY_TOOL_VERSION "${CLANG_TIDY_TOOL_VERSION}")
 message(STATUS "🔖 Clang-Tidy ${CLANG_TIDY_TOOL_VERSION} (${CLANG_TIDY_TOOL})")

 message(STATUS "🔖 CMake ${CMAKE_VERSION} (${CMAKE_COMMAND})")

-find_program(GCC_TOOL NAMES g++-latest g++-HEAD g++ g++-15 g++-14 g++-13 g++-12 g++-11 g++-10)
+find_program(GCC_TOOL NAMES g++-latest g++-HEAD g++ g++-16 g++-15 g++-14 g++-13 g++-12 g++-11 g++-10)
 execute_process(COMMAND ${GCC_TOOL} --version OUTPUT_VARIABLE GCC_TOOL_VERSION ERROR_VARIABLE GCC_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GCC_TOOL_VERSION "${GCC_TOOL_VERSION}")
 message(STATUS "🔖 GCC ${GCC_TOOL_VERSION} (${GCC_TOOL})")

-find_program(GCOV_TOOL NAMES gcov-HEAD gcov gcov-15 gcov-14 gcov-13 gcov-12 gcov-11 gcov-10)
+find_program(GCOV_TOOL NAMES gcov-HEAD gcov gcov-16 gcov-15 gcov-14 gcov-13 gcov-12 gcov-11 gcov-10)
 execute_process(COMMAND ${GCOV_TOOL} --version OUTPUT_VARIABLE GCOV_TOOL_VERSION ERROR_VARIABLE GCOV_TOOL_VERSION)
 string(REGEX MATCH "[0-9]+(\\.[0-9]+)+" GCOV_TOOL_VERSION "${GCOV_TOOL_VERSION}")
 message(STATUS "🔖 GCOV ${GCOV_TOOL_VERSION} (${GCOV_TOOL})")
@@ -69,7 +69,6 @@ message(STATUS "🔖 Valgrind ${VALGRIND_TOOL_VERSION} (${VALGRIND_TOOL})")
 find_program(GENHTML_TOOL NAMES genhtml)
 find_program(PLOG_CONVERTER_TOOL NAMES plog-converter)
 find_program(PVS_STUDIO_ANALYZER_TOOL NAMES pvs-studio-analyzer)
-find_program(SCAN_BUILD_TOOL NAMES scan-build-15 scan-build-14 scan-build-13 scan-build-12 scan-build-11 scan-build)

 # the individual source files
 file(GLOB_RECURSE SRC_FILES ${PROJECT_SOURCE_DIR}/include/nlohmann/*.hpp)
@@ -426,21 +425,6 @@ add_custom_target(ci_test_valgrind
    COMMENT "Compile and test with Valgrind"
 )

-###############################################################################
-# Check code with Clang Static Analyzer.
-###############################################################################
-
-set(CLANG_ANALYZER_CHECKS "fuchsia.HandleChecker,nullability.NullableDereferenced,nullability.NullablePassedToNonnull,nullability.NullableReturnedFromNonnull,optin.cplusplus.UninitializedObject,optin.cplusplus.VirtualCall,optin.mpi.MPI-Checker,optin.osx.OSObjectCStyleCast,optin.osx.cocoa.localizability.EmptyLocalizationContextChecker,optin.osx.cocoa.localizability.NonLocalizedStringChecker,optin.performance.GCDAntipattern,optin.performance.Padding,optin.portability.UnixAPI,security.FloatLoopCounter,security.insecureAPI.DeprecatedOrUnsafeBufferHandling,security.insecureAPI.bcmp,security.insecureAPI.bcopy,security.insecureAPI.bzero,security.insecureAPI.rand,security.insecureAPI.strcpy,valist.CopyToSelf,valist.Uninitialized,valist.Unterminated,webkit.NoUncountedMemberChecker,webkit.RefCntblBaseVirtualDtor,core.CallAndMessage,core.DivideZero,core.NonNullParamChecker,core.NullDereference,core.StackAddressEscape,core.UndefinedBinaryOperatorResult,core.VLASize,core.uninitialized.ArraySubscript,core.uninitialized.Assign,core.uninitialized.Branch,core.uninitialized.CapturedBlockVariable,core.uninitialized.UndefReturn,cplusplus.InnerPointer,cplusplus.Move,cplusplus.NewDelete,cplusplus.NewDeleteLeaks,cplusplus.PlacementNew,cplusplus.PureVirtualCall,deadcode.DeadStores,nullability.NullPassedToNonnull,nullability.NullReturnedFromNonnull,osx.API,osx.MIG,osx.NumberObjectConversion,osx.OSObjectRetainCount,osx.ObjCProperty,osx.SecKeychainAPI,osx.cocoa.AtSync,osx.cocoa.AutoreleaseWrite,osx.cocoa.ClassRelease,osx.cocoa.Dealloc,osx.cocoa.IncompatibleMethodTypes,osx.cocoa.Loops,osx.cocoa.MissingSuperCall,osx.cocoa.NSAutoreleasePool,osx.cocoa.NSError,osx.cocoa.NilArg,osx.cocoa.NonNilReturnValue,osx.cocoa.ObjCGenerics,osx.cocoa.RetainCount,osx.cocoa.RunLoopAutoreleaseLeak,osx.cocoa.SelfInit,osx.cocoa.SuperDealloc,osx.cocoa.UnusedIvars,osx.cocoa.VariadicMethodTypes,osx.coreFoundation.CFError,osx.coreFoundation.CFNumber,osx.coreFoundation.CFRetainRelease,osx.coreFoundation.containers.OutOfBounds,osx.coreFoundation.containers.PointerSizedValues,security.insecureAPI.UncheckedReturn,security.insecureAPI.decodeValueOfObjCType,security.insecureAPI.getpw,security.insecureAPI.gets,security.insecureAPI.mkstemp,security.insecureAPI.mktemp,security.insecureAPI.vfork,unix.API,unix.Malloc,unix.MallocSizeof,unix.MismatchedDeallocator,unix.Vfork,unix.cstring.BadSizeArg,unix.cstring.NullArg")
-
-add_custom_target(ci_clang_analyze
-    COMMAND CXX=${CLANG_TOOL} ${CMAKE_COMMAND}
-        -DCMAKE_BUILD_TYPE=Debug -GNinja
-        -DJSON_BuildTests=ON
-        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_clang_analyze
-    COMMAND cd ${PROJECT_BINARY_DIR}/build_clang_analyze && ${SCAN_BUILD_TOOL} -enable-checker ${CLANG_ANALYZER_CHECKS} --use-c++=${CLANG_TOOL} -analyze-headers -o ${PROJECT_BINARY_DIR}/report ninja
-    COMMENT "Check code with Clang Analyzer"
-)
-
 ###############################################################################
 # Check code with Cppcheck.
 ###############################################################################
@@ -2,7 +2,6 @@
 # -Wno-c++98-compat               The library targets C++11.
 # -Wno-c++98-compat-pedantic      The library targets C++11.
 # -Wno-deprecated-declarations    The library contains annotations for deprecated functions.
-# -Wno-extra-semi-stmt            The library uses assert which triggers this warning.
 # -Wno-padded                     We do not care about padding warnings.
 # -Wno-covered-switch-default     All switches list all cases and a default case.
 # -Wno-c2y-extensions             Clang 22.1 diagnoses __COUNTER__ as a C2y extension, also in
@@ -20,7 +19,6 @@ set(CLANG_CXXFLAGS
    -Wno-c++98-compat
    -Wno-c++98-compat-pedantic
    -Wno-deprecated-declarations
-    -Wno-extra-semi-stmt
    -Wno-padded
    -Wno-covered-switch-default
    -Wno-c2y-extensions
@@ -1,4 +1,4 @@
-# Warning flags determined for GCC 15.1.0 with https://github.com/nlohmann/gcc_flags:
+# Warning flags determined for GCC 16.2.0 with https://github.com/nlohmann/gcc_flags:
 # Ignored GCC warnings:
 # -Wno-abi-tag           We do not care about ABI tags.
 # -Wno-aggregate-return  The library uses aggregate returns.
@@ -16,6 +16,8 @@ set(GCC_CXXFLAGS
    --extra-warnings
    -W
    -WNSObject-attribute
+    -Wabbreviated-auto-in-template-arg
+    -Wabi
    -Wno-abi-tag
    -Waddress
    -Waddress-of-packed-member
@@ -64,6 +66,7 @@ set(GCC_CXXFLAGS
    -Wanalyzer-tainted-divisor
    -Wanalyzer-tainted-offset
    -Wanalyzer-tainted-size
+    -Wanalyzer-throw-of-unexpected-type
    -Wanalyzer-too-complex
    -Wanalyzer-undefined-behavior-ptrdiff
    -Wanalyzer-undefined-behavior-strtok
@@ -80,10 +83,13 @@ set(GCC_CXXFLAGS
    -Warith-conversion
    -Warray-bounds=2
    -Warray-compare
+    -Warray-parameter
    -Warray-parameter=2
    -Wattribute-alias=2
    -Wattribute-warning
    -Wattributes
+    -Wauto-profile
+    -Wbidi-chars=any
    -Wbool-compare
    -Wbool-operation
    -Wbuiltin-declaration-mismatch
@@ -99,6 +105,7 @@ set(GCC_CXXFLAGS
    -Wc++20-compat
    -Wc++20-extensions
    -Wc++23-extensions
+    -Wc++26-compat
    -Wc++26-extensions
    -Wc++2a-compat
    -Wcalloc-transposed-args
@@ -142,6 +149,7 @@ set(GCC_CXXFLAGS
    -Wdeprecated-enum-enum-conversion
    -Wdeprecated-enum-float-conversion
    -Wdeprecated-literal-operator
+    -Wdeprecated-openmp
    -Wdeprecated-variadic-comma-omission
    -Wdisabled-optimization
    -Wdiv-by-zero
@@ -156,21 +164,18 @@ set(GCC_CXXFLAGS
    -Wenum-conversion
    -Wexceptions
    -Wexpansion-to-defined
+    -Wexperimental-fmv-target
+    -Wexpose-global-module-tu-local
+    -Wexternal-tu-local
    -Wextra
    -Wextra-semi
    -Wflex-array-member-not-at-end
    -Wfloat-conversion
    -Wfloat-equal
-    -Wformat -Wformat-contains-nul
-    -Wformat -Wformat-diag
-    -Wformat -Wformat-extra-args
-    -Wformat -Wformat-nonliteral
-    -Wformat -Wformat-overflow=2
-    -Wformat -Wformat-security
-    -Wformat -Wformat-signedness
-    -Wformat -Wformat-truncation=2
-    -Wformat -Wformat-y2k
-    -Wformat -Wformat-zero-length
+    -Wformat-diag
+    -Wformat-overflow=2
+    -Wformat-signedness
+    -Wformat-truncation=2
    -Wformat=2
    -Wframe-address
    -Wfree-nonheap-object
@@ -197,6 +202,8 @@ set(GCC_CXXFLAGS
    -Winvalid-offsetof
    -Winvalid-pch
    -Winvalid-utf8
+    -Wkeyword-macro
+    -Wleading-whitespace=spaces
    -Wliteral-suffix
    -Wlogical-not-parentheses
    -Wlogical-op
@@ -227,6 +234,7 @@ set(GCC_CXXFLAGS
    -Wnarrowing
    -Wnoexcept
    -Wnoexcept-type
+    -Wnon-c-typedef-for-linkage
    -Wnon-template-friend
    -Wnon-virtual-dtor
    -Wnonnull
@@ -269,6 +277,8 @@ set(GCC_CXXFLAGS
    -Wscalar-storage-order
    -Wself-move
    -Wsequence-point
+    -Wsfinae-incomplete
+    -Wsfinae-incomplete=2
    -Wshadow=compatible-local
    -Wshadow=global
    -Wshadow=local
@@ -289,6 +299,7 @@ set(GCC_CXXFLAGS
    -Wstrict-aliasing=3
    -Wstrict-null-sentinel
    -Wstrict-overflow
+    -Wstrict-overflow=5
    -Wstring-compare
    -Wstringop-overflow
    -Wstringop-overflow=4
@@ -333,8 +344,8 @@ set(GCC_CXXFLAGS
    -Wunreachable-code
    -Wunsafe-loop-optimizations
    -Wunused
-    -Wunused-but-set-parameter
-    -Wunused-but-set-variable
+    -Wunused-but-set-parameter=3
+    -Wunused-but-set-variable=3
    -Wunused-const-variable=2
    -Wunused-function
    -Wunused-label
@@ -23,10 +23,9 @@ type to use.
 ## Template parameters

 `NumberFloatType`
-:   the type to store floating-point numbers. The parser converts `#!cpp float`, `#!cpp double`, and a
-    `#!cpp long double` that is IEEE 754 binary64 itself and other `#!cpp long double` formats with
-    `#!cpp std::from_chars` or `#!cpp std::strtold`, and serialization falls back to `#!cpp std::snprintf`, so the
-    type must be `#!cpp float`, `#!cpp double`, or `#!cpp long double`. The
+:   the type to store floating-point numbers. Parsing and serialization are implemented in terms of
+    `#!cpp std::strtof`/`#!cpp std::strtod`/`#!cpp std::strtold` and `#!cpp std::snprintf`, so the type must be
+    `#!cpp float`, `#!cpp double`, or `#!cpp long double`. The
    [binary formats](../../features/binary_formats/index.md) additionally require `#!cpp float` or `#!cpp double`,
    because they have no encoding for `#!cpp long double`. See
    [Template Parameter Requirements](../../features/types/template_parameters.md#numberfloattype).
@@ -60,11 +60,11 @@ measures that counter them. The measures are described in detail in [Quality ass
 |---------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
 | Out-of-bounds read/write ([CWE-125](https://cwe.mitre.org/data/definitions/125.html), [CWE-787](https://cwe.mitre.org/data/definitions/787.html)) | bounds checks on all reads from the input; AddressSanitizer and Valgrind on the test suite; OSS-Fuzz      |
 | Integer overflow ([CWE-190](https://cwe.mitre.org/data/definitions/190.html)) | UndefinedBehaviorSanitizer with integer overflow detection; Clang-Tidy; Cppcheck                 |
-| Use after free, double free ([CWE-416](https://cwe.mitre.org/data/definitions/416.html), [CWE-415](https://cwe.mitre.org/data/definitions/415.html)) | ownership of all memory by values; AddressSanitizer and Valgrind; Clang Static Analyzer          |
+| Use after free, double free ([CWE-416](https://cwe.mitre.org/data/definitions/416.html), [CWE-415](https://cwe.mitre.org/data/definitions/415.html)) | ownership of all memory by values; AddressSanitizer and Valgrind; Clang-Tidy (incl. Clang Static Analyzer checks) |
 | Memory leaks ([CWE-401](https://cwe.mitre.org/data/definitions/401.html)) | Valgrind (Memcheck) on the test suite                                                            |
 | Uncontrolled recursion ([CWE-674](https://cwe.mitre.org/data/definitions/674.html)) | iterative parser, binary readers, and destructor; bounded recursion in value operations; tests with deeply nested inputs |
 | Uncontrolled resource consumption ([CWE-400](https://cwe.mitre.org/data/definitions/400.html)) | allocations based on announced sizes are capped; OSS-Fuzz with memory limits                     |
-| Undefined behavior in general ([CWE-758](https://cwe.mitre.org/data/definitions/758.html)) | UndefinedBehaviorSanitizer; runtime assertions; Clang-Tidy, Cppcheck, Clang Static Analyzer, Infer |
+| Undefined behavior in general ([CWE-758](https://cwe.mitre.org/data/definitions/758.html)) | UndefinedBehaviorSanitizer; runtime assertions; Clang-Tidy (incl. Clang Static Analyzer checks), Cppcheck, Infer |

 In addition, every line of the library is covered by the unit tests, and all parsers are fuzz-tested around the clock
 by [OSS-Fuzz](https://github.com/google/oss-fuzz/tree/master/projects/json).
@@ -183,8 +183,8 @@ Note: Some modern features (like C++20 ranges or filesystem support) may be disa
        ```

 - [x] The code is checked with the latest [Cppcheck](https://cppcheck.sourceforge.io) with all warnings enabled.
- [x] The code is checked with the latest [Clang Static Analyzer](https://clang-analyzer.llvm.org) with 89 enabled
-  rules.
+- [x] The code is checked with the latest [Clang Static Analyzer](https://clang-analyzer.llvm.org) checks, run
+  through Clang-Tidy's `clang-analyzer-*` checks with warnings as errors.
 - [x] The code is checked with [Infer](https://fbinfer.com).
 - [x] The code is checked with [Codacy](https://app.codacy.com/gh/nlohmann/json/dashboard).

@@ -71,11 +71,10 @@ otherwise, it uses unsigned integer storage.

    - Numbers with a decimal digit or scientific notation are always stored as `#!c double`.
    - The number types can be changed, see [Template number types](#template-number-types). 
-    - The library converts integers and floating-point numbers itself, independent of the locale. Floating-point
-      numbers are correctly rounded (to nearest, ties to even). Only a `#!c long double` that is not IEEE 754 binary64
-      (e.g., the 80-bit x87 format) is converted with `#!cpp std::from_chars` where available, or with
-      [`std::strtold`](https://en.cppreference.com/w/cpp/string/byte/strtof), which gets the decimal point of the
-      current locale, also one longer than one byte (e.g., in `fa_IR.UTF-8`).
+    - As of version 3.9.1, the conversion is realized by
+      [`std::strtoull`](https://en.cppreference.com/w/cpp/string/byte/strtoul),
+      [`std::strtoll`](https://en.cppreference.com/w/cpp/string/byte/strtol), and
+      [`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof), respectively.

 !!! example "Examples"

@@ -86,10 +85,10 @@ otherwise, it uses unsigned integer storage.
 ### Number limits

 - Any 64-bit signed or unsigned integer can be stored without loss of precision.
- Numbers exceeding the limits of `#!c double` (i.e., numbers whose rounded value is not satisfying
+- Numbers exceeding the limits of `#!c double` (i.e., numbers that after conversion via
+[`std::strtod`](https://en.cppreference.com/w/cpp/string/byte/strtof) are not satisfying
 [`std::isfinite`](https://en.cppreference.com/w/cpp/numeric/math/isfinite) such as `#!c 1E400`) will throw exception
-[`json.exception.out_of_range.406`](../../home/exceptions.md#jsonexceptionout_of_range406) during parsing. Numbers too
-small for `#!c double` (such as `#!c 1E-400`) become zero, with the sign of the number.
+[`json.exception.out_of_range.406`](../../home/exceptions.md#jsonexceptionout_of_range406) during parsing.
 - Floating-point numbers are rounded to the next number representable as `double`. For instance
 `#!c 3.141592653589793238462643383279` is stored as [`0x400921fb54442d18`](https://float.exposed/0x400921fb54442d18).
 This is the same behavior as the code `#!c double x = 3.141592653589793238462643383279;`.
@@ -26,9 +26,8 @@ Requirements are split into two groups:
    diagnosed with dedicated error messages, and violating most of them results in a compiler error somewhere inside
    the library. Four violations are not caught at compile time at all:

-    - A [`StringType`](#stringtype) whose `data()` is not null-terminated compiles and silently misparses numbers
-      stored as a `#!cpp long double` that is not IEEE 754 binary64 (e.g., the 80-bit x87 format), because the lexer
-      hands the buffer to `#!cpp std::strtold`.
+    - A [`StringType`](#stringtype) whose `data()` is not null-terminated compiles and silently misparses numbers,
+      because the lexer hands the buffer to `#!cpp std::strtoull`/`#!cpp std::strtoll`/`#!cpp std::strtod`.
    - A stateful [`AllocatorType`](#allocatortype) compiles and silently ignores its state: allocation, deallocation,
      and [`get_allocator()`](../../api/basic_json/get_allocator.md) each use a different default-constructed instance.
    - The two [cross-specialization conversions](#cross-specialization-conversions) below. These abort on an assertion
@@ -536,10 +535,8 @@ therefore silently changes parse results rather than raising an error. See

 `NumberFloatType` must be one of `#!cpp float`, `#!cpp double`, or `#!cpp long double`:

- The [parser](../parsing/index.md) converts number literals to `#!cpp float`, `#!cpp double`, and a
-  `#!cpp long double` that is IEEE 754 binary64 itself; other `#!cpp long double` formats are converted with
-  `#!cpp std::from_chars` where available, or with `#!cpp std::strtold`. The library provides overloads for exactly
-  these three types.
+- The [parser](../parsing/index.md) converts number literals with `#!cpp std::strtof`, `#!cpp std::strtod`, or
+  `#!cpp std::strtold`; the library provides overloads for exactly these three types.
 - [`dump`](../../api/basic_json/dump.md) falls back to `#!cpp std::snprintf` with the `%g` and `%Lg` conversion
  specifiers, for which the library likewise provides only `#!cpp double` and `#!cpp long double` overloads
  (`#!cpp float` is promoted to `#!cpp double`).
@@ -20,4 +20,4 @@ The class contains a slightly modified version of the Grisu2 algorithm from Flor

 The class contains a copy of [Hedley](https://nemequ.github.io/hedley/) from Evan Nemerson which is licensed as [CC0-1.0](https://creativecommons.org/publicdomain/zero/1.0/).

-The class contains an adapted version of the Eisel-Lemire algorithm, its table of powers of five, and its digit comparison for long numbers from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
+The class contains an adapted version of the Eisel-Lemire algorithm and its table of powers of five from [fast_float](https://github.com/fastfloat/fast_float) by Daniel Lemire and contributors, which is available under the [MIT License](https://opensource.org/licenses/MIT) (used here), the Apache 2.0 License, and the Boost Software License. Copyright &copy; 2021 The fast_float authors
@@ -1,34 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <nlohmann/detail/abi_macros.hpp>
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-
-/*!
-@brief the configuration macros that change the library's behavior
-
-json.hpp undefines these macros at its end (see macro_unscope.hpp), so code
-that builds on the library after it (json_view.hpp) reads them here. Like the
-macros, they are part of the ABI namespace, so they always match the
-basic_json they are used with.
-*/
-struct abi_config
-{
-    /// JSON_STRICT_NUL_HANDLING: a null byte is an error, not the end of input
-    static constexpr bool strict_nul_handling = JSON_STRICT_NUL_HANDLING != 0;
-    /// JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON
-    static constexpr bool legacy_discarded_value_comparison = JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON != 0;
-};
-
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
@@ -39,25 +39,6 @@ inline int count_leading_zeros(std::uint64_t x) noexcept
 #endif
 }

-/// number of trailing zero bits of x (x != 0)
-inline int count_trailing_zeros(std::uint64_t x) noexcept
-{
-#if defined(__GNUC__) || defined(__clang__)
-    return __builtin_ctzll(x);
-#else
-    int n = 0;
-    for (int shift = 32; shift != 0; shift >>= 1)
-    {
-        if ((x << (64 - shift)) == 0)
-        {
-            n += shift;
-            x >>= shift;
-        }
-    }
-    return n;
-#endif
-}
-
 /// the 128-bit product of two 64-bit numbers
 struct uint128_parts
 {
@@ -87,19 +68,14 @@ inline uint128_parts full_multiplication(std::uint64_t a, std::uint64_t b) noexc

 /// eight bytes as a little-endian word (compilers fold this into one load on
 /// little-endian targets)
-inline std::uint64_t read_eight_bytes(const unsigned char* b) noexcept
+inline std::uint64_t read_eight_bytes(const char* p) noexcept
 {
+    const auto* b = reinterpret_cast<const unsigned char*>(p); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
    return static_cast<std::uint64_t>(b[0]) | (static_cast<std::uint64_t>(b[1]) << 8u)
           | (static_cast<std::uint64_t>(b[2]) << 16u) | (static_cast<std::uint64_t>(b[3]) << 24u)
           | (static_cast<std::uint64_t>(b[4]) << 32u) | (static_cast<std::uint64_t>(b[5]) << 40u)
           | (static_cast<std::uint64_t>(b[6]) << 48u) | (static_cast<std::uint64_t>(b[7]) << 56u);
 }

-/// eight bytes as a little-endian word
-inline std::uint64_t read_eight_bytes(const char* p) noexcept
-{
-    return read_eight_bytes(reinterpret_cast<const unsigned char*>(p)); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
-}
-
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END
@@ -354,22 +354,22 @@ void())
 }

 template < typename BasicJsonType, typename T, std::size_t... Idx >
-std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(BasicJsonType&& j,
+std::array<T, sizeof...(Idx)> from_json_inplace_array_impl(const BasicJsonType& j,
                     identity_tag<std::array<T, sizeof...(Idx)>> /*unused*/, index_sequence<Idx...> /*unused*/)
 {
-    return { { std::forward<BasicJsonType>(j).at(Idx).template get<T>()... } };
+    return { { j.at(Idx).template get<T>()... } };
 }

 template < typename BasicJsonType, typename T, std::size_t N >
-auto from_json(BasicJsonType&& j, identity_tag<std::array<T, N>> tag)
-> decltype(from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {}))
+auto from_json(const BasicJsonType& j, identity_tag<std::array<T, N>> tag)
+-> decltype(from_json_inplace_array_impl(j, tag, make_index_sequence<N> {}))
 {
    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
    {
        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
    }

-    return from_json_inplace_array_impl(std::forward<BasicJsonType>(j), tag, make_index_sequence<N> {});
+    return from_json_inplace_array_impl(j, tag, make_index_sequence<N> {});
 }

 template<typename BasicJsonType>
@@ -504,54 +504,54 @@ template<std::size_t PTagValue, typename BasicJsonType, typename... Types>
 using tuple_type = std::tuple < decltype(from_json_tuple_get_impl(std::declval<BasicJsonType>(), detail::identity_tag<Types> {}, detail::priority_tag<PTagValue> {}))... >;

 template<std::size_t PTagValue, typename... Args, typename BasicJsonType, std::size_t... Idx>
-tuple_type<PTagValue, BasicJsonType, Args...> from_json_tuple_impl_base(BasicJsonType&& j, index_sequence<Idx...> /*unused*/)
+tuple_type<PTagValue, const BasicJsonType&, Args...> from_json_tuple_impl_base(const BasicJsonType& j, index_sequence<Idx...> /*unused*/)
 {
-    return tuple_type<PTagValue, BasicJsonType, Args...>(from_json_tuple_get_impl(std::forward<BasicJsonType>(j).at(Idx), detail::identity_tag<Args> {}, detail::priority_tag<PTagValue> {})...);
+    return tuple_type<PTagValue, const BasicJsonType&, Args...>(from_json_tuple_get_impl(j.at(Idx), detail::identity_tag<Args> {}, detail::priority_tag<PTagValue> {})...);
 }

 template<std::size_t PTagValue, typename BasicJsonType>
-std::tuple<> from_json_tuple_impl_base(BasicJsonType& /*unused*/, index_sequence<> /*unused*/)
+std::tuple<> from_json_tuple_impl_base(const BasicJsonType& /*unused*/, index_sequence<> /*unused*/)
 {
    return {};
 }

 template < typename BasicJsonType, class A1, class A2 >
-std::pair<A1, A2> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
+std::pair<A1, A2> from_json_tuple_impl(const BasicJsonType& j, identity_tag<std::pair<A1, A2>> /*unused*/, priority_tag<0> /*unused*/)
 {
-    return {std::forward<BasicJsonType>(j).at(0).template get<A1>(),
-            std::forward<BasicJsonType>(j).at(1).template get<A2>()};
+    return {j.at(0).template get<A1>(),
+            j.at(1).template get<A2>()};
 }

 template<typename BasicJsonType, typename A1, typename A2>
-inline void from_json_tuple_impl(BasicJsonType&& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
+inline void from_json_tuple_impl(const BasicJsonType& j, std::pair<A1, A2>& p, priority_tag<1> /*unused*/)
 {
-    p = from_json_tuple_impl(std::forward<BasicJsonType>(j), identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
+    p = from_json_tuple_impl(j, identity_tag<std::pair<A1, A2>> {}, priority_tag<0> {});
 }

 template<typename BasicJsonType, typename... Args>
-std::tuple<Args...> from_json_tuple_impl(BasicJsonType&& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
+std::tuple<Args...> from_json_tuple_impl(const BasicJsonType& j, identity_tag<std::tuple<Args...>> /*unused*/, priority_tag<2> /*unused*/)
 {
-    static_assert(cxpr_and<cxpr_or<cxpr_not<std::is_reference<Args>>, is_compatible_reference_type<BasicJsonType, Args>>...>::value,
+    static_assert(cxpr_and<cxpr_or<cxpr_not<std::is_reference<Args>>, is_compatible_reference_type<const BasicJsonType&, Args>>...>::value,
                  "Can not return a tuple containing references to types not contained in a Json, try Json::get_to()");
-    return from_json_tuple_impl_base<1, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    return from_json_tuple_impl_base<1, Args...>(j, index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename... Args>
-inline void from_json_tuple_impl(BasicJsonType&& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
+inline void from_json_tuple_impl(const BasicJsonType& j, std::tuple<Args...>& t, priority_tag<3> /*unused*/)
 {
-    t = from_json_tuple_impl_base<2, Args...>(std::forward<BasicJsonType>(j), index_sequence_for<Args...> {});
+    t = from_json_tuple_impl_base<2, Args...>(j, index_sequence_for<Args...> {});
 }

 template<typename BasicJsonType, typename TupleRelated>
-auto from_json(BasicJsonType&& j, TupleRelated&& t)
-> decltype(from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {}))
+auto from_json(const BasicJsonType& j, TupleRelated&& t)
+-> decltype(from_json_tuple_impl(j, std::forward<TupleRelated>(t), priority_tag<3> {}))
 {
    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
    {
        JSON_THROW(type_error::create(302, concat("type must be array, but is ", j.type_name()), &j));
    }

-    return from_json_tuple_impl(std::forward<BasicJsonType>(j), std::forward<TupleRelated>(t), priority_tag<3> {});
+    return from_json_tuple_impl(j, std::forward<TupleRelated>(t), priority_tag<3> {});
 }

 template < typename BasicJsonType, typename Key, typename Value, typename Compare, typename Allocator,
@@ -636,7 +636,7 @@ struct from_json_fn
 /// namespace to hold default `from_json` function
 /// to see why this is required:
 /// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
-namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces,misc-anonymous-namespace-in-header)
 {
 #endif
 JSON_INLINE_VARIABLE constexpr const auto& from_json = // NOLINT(misc-definitions-in-headers)
@@ -546,7 +546,7 @@ struct to_json_fn
 /// namespace to hold default `to_json` function
 /// to see why this is required:
 /// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4381.html
-namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces)
+namespace // NOLINT(cert-dcl59-cpp,fuchsia-header-anon-namespaces,google-build-namespaces,misc-anonymous-namespace-in-header)
 {
 #endif
 JSON_INLINE_VARIABLE constexpr const auto& to_json = // NOLINT(misc-definitions-in-headers)
@@ -407,7 +407,7 @@ class binary_reader
    @brief Parses a C-style string from the BSON input.
    @param[in,out] result  A reference to the string variable where the read
                            string is to be stored.
-    @return `true` if the \x00-byte indicating the end of the string was
+    @return `true` if the \\x00-byte indicating the end of the string was
             encountered before the EOF; false` indicates an unexpected EOF.
    */
    bool get_bson_cstr(string_t& result)
@@ -437,7 +437,7 @@ class binary_reader
    @brief read a C-style string from contiguous input in one step

    @param[in,out] result  the string to append to
-    @return whether the string was read; if the input has no \x00-byte, nothing
+    @return whether the string was read; if the input has no \\x00-byte, nothing
            is read, and @ref get_bson_cstr reports the end of the input
    */
    bool get_bson_cstr_bulk(string_t& result, std::true_type /*bulk*/)
@@ -769,6 +769,9 @@ struct container_input_adapter_factory< ContainerType,

           static adapter_type create(ContainerType&& container)
 {
+    // container is forwarded twice on purpose: the resulting begin/end
+    // iterator types must match adapter_type, computed the same way
+    // NOLINTNEXTLINE(bugprone-use-after-move)
    return input_adapter(begin(std::forward<ContainerType>(container)), end(std::forward<ContainerType>(container)));
 }
       };
@@ -440,7 +440,7 @@ class json_sax_dom_parser
                }
                default: // LCOV_EXCL_LINE
                    // Handle all possible types discretely, default handler should never be reached.
-                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
            }
        }
    }
@@ -903,7 +903,7 @@ class json_sax_dom_callback_parser
                }
                default: // LCOV_EXCL_LINE
                    // Handle all possible types discretely, default handler should never be reached.
-                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert,-warnings-as-errors) LCOV_EXCL_LINE
+                    JSON_ASSERT(false); // NOLINT(cert-dcl03-c,hicpp-static-assert,misc-static-assert) LCOV_EXCL_LINE
            }
        }
    }
@@ -219,48 +219,10 @@ class lexer : public lexer_base<BasicJsonType>
    // scan functions
    /////////////////////

-    /// contiguous input: try to decode the 4 hex digits following `\u`
-    /// directly from the input buffer via hex_codepoint(), instead of 4 calls
-    /// to get(). On success, advances the adapter and the position counters
-    /// exactly as those 4 get() calls would (a hex digit is never '\n', so
-    /// only the flat counters move) and leaves @a current holding the last of
-    /// the 4 digits, just as the last such get() would; the codepoint is
-    /// written to @a out. Makes no state change and returns false - for a
-    /// pending unget, fewer than 4 remaining bytes, or any of the 4 bytes not
-    /// being a hex digit - so the caller falls back unchanged to the
-    /// per-character loop, which then reports the same diagnostic (stopping
-    /// at the first invalid digit) as before this optimization.
-    bool get_codepoint_bulk(std::true_type /*bulk*/, int& out)
-    {
-        if (next_unget || ia.bulk_remaining() < 4)
-        {
-            return false;
-        }
-        const char_type* const raw = ia.bulk_data();
-        const int codepoint = hex_codepoint(reinterpret_cast<const unsigned char*>(raw));
-        if (codepoint < 0)
-        {
-            return false;
-        }
-        ia.bulk_skip(4);
-        // a hex digit is never a newline, so only the flat counters advance
-        position.chars_read_total += 4;
-        position.chars_read_current_line += 4;
-        current = char_traits<char_type>::to_int_type(raw[3]);
-        out = codepoint;
-        return true;
-    }
-
-    /// streaming input: no bulk fast path
-    bool get_codepoint_bulk(std::false_type /*bulk*/, int& /*out*/) const noexcept
-    {
-        return false;
-    }
-
    /*!
-    @brief get codepoint from 4 hex characters following `\u`
+    @brief get codepoint from 4 hex characters following `\\u`

-    For input "\u c1 c2 c3 c4" the codepoint is:
+    For input "\\u c1 c2 c3 c4" the codepoint is:
      (c1 * 0x1000) + (c2 * 0x0100) + (c3 * 0x0010) + c4
    = (c1 << 12) + (c2 << 8) + (c3 << 4) + (c4 << 0)

@@ -276,14 +238,6 @@ class lexer : public lexer_base<BasicJsonType>
    {
        // this function only makes sense after reading `\u`
        JSON_ASSERT(current == 'u');
-
-        // contiguous input: decode all 4 hex digits directly from the buffer
-        int fast_codepoint = 0;
-        if (get_codepoint_bulk(std::integral_constant<bool, bulk_scan> {}, fast_codepoint))
-        {
-            return fast_codepoint;
-        }
-
        int codepoint = 0;

        const auto factors = { 12u, 8u, 4u, 0u };
@@ -1105,11 +1059,9 @@ class lexer : public lexer_base<BasicJsonType>
            token_type::parse_error otherwise

    @note The scanner is independent of the current locale: token_buffer
-          always holds `.`. The conversion of float and double does not use
-          the locale either. Only the std::strtold fallback of
-          convert_number() for long double formats other than binary64
-          depends on it, and it looks up the decimal point right before
-          converting (see detail::convert_float_locale_aware()).
+          always holds `.`. Only the std::strtod fallback of convert_number()
+          depends on the locale, and it looks up the decimal point right
+          before converting (see detail::convert_float_locale_aware()).
    */
    token_type scan_number()  // lgtm [cpp/use-of-goto] `goto` is used in this function to implement the number-parsing state machine described above. By design, any finite input will eventually reach the "done" state or return token_type::parse_error. In each intermediate state, 1 byte of the input is appended to the token_buffer vector, and only the already initialized variables token_buffer, number_type, and error_message are manipulated.
    {
@@ -1122,7 +1074,7 @@ class lexer : public lexer_base<BasicJsonType>

        // offset just past the last mantissa byte in token_buffer (i.e. the
        // index of 'e'/'E', or the whole token when there is no exponent).
-        // convert_number() uses it to split the token; npos means
+        // convert_number() uses it to count significant digits; npos means
        // "not seen an exponent yet" and is resolved at scan_number_done
        std::size_t mantissa_end = std::string::npos;

@@ -1452,8 +1404,8 @@ scan_number_done:
    @param[in] mantissa_end  offset just past the last mantissa byte in
                             token_buffer (the index of 'e'/'E', or
                             token_buffer.size() when there is no exponent);
-                             with decimal_point_position, it locates the parts
-                             of a float token without scanning it again
+                             used to skip Clinger's fast path when it cannot
+                             possibly succeed - see detail::mantissa_fits_clinger()
    */
    token_type convert_number(token_type number_type, std::size_t mantissa_end)
    {
@@ -1522,11 +1474,10 @@ scan_number_done:
        }

        // this code is reached if we parse a floating-point number or if an
-        // integer conversion above overflowed. float and double (and long
-        // double where it is binary64) are converted by the library itself,
-        // correctly rounded and independent of the locale; other long double
-        // formats use std::from_chars when available, otherwise the
-        // locale-aware strtold.
+        // integer conversion above overflowed. Prefer std::from_chars
+        // (Eisel-Lemire, locale-independent, correctly rounded) when available;
+        // otherwise the exact Clinger fast path (double only); otherwise the
+        // locale-aware strtof/strtod/strtold.
        if (convert_float_fast(num_begin, num_end, decimal_point_position, mantissa_end, value_float))
        {
            return token_type::value_float;
@@ -8,12 +8,10 @@

 #pragma once

-#include <array> // array
 #include <cstddef> // size_t
-#include <cstdint> // uint64_t, uint8_t
+#include <cstdint> // uint64_t
 #include <cstring> // memcpy

-#include <nlohmann/detail/bit_ops.hpp>
 #include <nlohmann/detail/macro_scope.hpp>

 // Optional SIMD backend for bulk UTF-8 validation. This is an opt-in external
@@ -71,12 +69,18 @@ inline std::size_t find_string_special(const unsigned char* data, std::size_t n)
    std::size_t i = 0;
    for (; i + 8 <= n; i += 8)
    {
-        const std::uint64_t special = swar_string_special(read_eight_bytes(data + i));
-        if (special != 0)
+        std::uint64_t word = 0;
+        std::memcpy(&word, data + i, sizeof(word));
+        if (swar_string_special(word) != 0)
        {
-            // the lowest flagged byte is the first special one: the borrows of
-            // the subtractions can only flag bytes above a true hit
-            return i + (static_cast<std::size_t>(count_trailing_zeros(special)) / 8);
+            // a special byte is in this word; locate it (endian-agnostic)
+            for (std::size_t j = 0; j < 8; ++j)
+            {
+                if (is_string_special(data[i + j]))
+                {
+                    return i + j;
+                }
+            }
        }
    }
    for (; i < n; ++i)
@@ -110,7 +114,8 @@ inline std::size_t find_ascii_copyable_run(const unsigned char* data, std::size_
    std::size_t i = 0;
    for (; i + 8 <= n; i += 8)
    {
-        const std::uint64_t v = read_eight_bytes(data + i);
+        std::uint64_t v = 0;
+        std::memcpy(&v, data + i, sizeof(v));
        const std::uint64_t q = v ^ 0x2222222222222222ull; // '"'  (0x22)
        const std::uint64_t b = v ^ 0x5C5C5C5C5C5C5C5Cull; // '\\' (0x5C)
        const std::uint64_t d = v ^ 0x7F7F7F7F7F7F7F7Full; // DEL  (0x7F)
@@ -121,9 +126,7 @@ inline std::size_t find_ascii_copyable_run(const unsigned char* data, std::size_
                                   | (v & high);               // >= 0x80
        if (stop != 0)
        {
-            // the lowest flagged byte is the first one to stop at (see
-            // find_string_special())
-            return i + (static_cast<std::size_t>(count_trailing_zeros(stop)) / 8);
+            break;
        }
    }
    for (; i < n; ++i)
@@ -250,18 +253,12 @@ inline std::size_t scalar_string_bulk_run(const unsigned char* data, std::size_t
        {
            break; // end of buffer, or a quote/escape/control byte
        }
-        // a run of multi-byte sequences (e.g. CJK text) is validated sequence
-        // by sequence without searching for the next special byte in between
-        do
+        const std::size_t seq = validate_one_utf8(data + pos, n - pos);
+        if (seq == 0)
        {
-            const std::size_t seq = validate_one_utf8(data + pos, n - pos);
-            if (seq == 0)
-            {
-                return pos; // ill-formed or truncated: let the byte path diagnose it
-            }
-            pos += seq;
+            break; // ill-formed or truncated: let the byte path diagnose it
        }
-        while (pos < n && data[pos] >= 0x80u);
+        pos += seq;
    }
    return pos;
 }
@@ -276,7 +273,8 @@ inline std::size_t find_string_delimiter(const unsigned char* data, std::size_t
    std::size_t i = 0;
    for (; i + 8 <= n; i += 8)
    {
-        const std::uint64_t v = read_eight_bytes(data + i);
+        std::uint64_t v = 0;
+        std::memcpy(&v, data + i, sizeof(v));
        const std::uint64_t q = v ^ 0x2222222222222222ull;
        const std::uint64_t b = v ^ 0x5C5C5C5C5C5C5C5Cull;
        const std::uint64_t hit = ((q - ones) & ~q & high)
@@ -284,8 +282,14 @@ inline std::size_t find_string_delimiter(const unsigned char* data, std::size_t
                                  | ((v - 0x2020202020202020ull) & ~v & high);
        if (hit != 0)
        {
-            // the lowest flagged byte is the first delimiter (see find_string_special())
-            return i + (static_cast<std::size_t>(count_trailing_zeros(hit)) / 8);
+            for (std::size_t j = 0; j < 8; ++j)
+            {
+                const unsigned char c = data[i + j];
+                if (c == '\"' || c == '\\' || c < 0x20u)
+                {
+                    return i + j;
+                }
+            }
        }
    }
    for (; i < n; ++i)
@@ -316,50 +320,5 @@ inline std::size_t string_bulk_run(const unsigned char* data, std::size_t n) noe
    return scalar_string_bulk_run(data, n);
 }

-// Decode the 4 hex digits at [data, data+4) - the digits following a `\u`
-// escape - into a codepoint 0x0000..0xFFFF via one table lookup per byte
-// (after yyjson's read_hex_u16), or return -1 if any of the 4 bytes is not a
-// hex digit ('0'..'9', 'A'..'F', 'a'..'f'). The caller must already have
-// checked that 4 bytes are available; used by lexer::get_codepoint()'s
-// contiguous fast path. On -1 it falls back to the byte-at-a-time loop, which
-// stops at the first invalid digit, so the reported error and position are
-// unaffected by this fast path.
-inline int hex_codepoint(const unsigned char* data) noexcept
-{
-    static const std::array<std::uint8_t, 256> hex_digit_table = // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
-    {
-        {
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 00..0F
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 10..1F
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 20..2F
-            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 30..3F ('0'..'9')
-            0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 40..4F ('A'..'F')
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 50..5F
-            0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 60..6F ('a'..'f')
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 70..7F
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 80..8F
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 90..9F
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // A0..AF
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // B0..BF
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // C0..CF
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // D0..DF
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // E0..EF
-            0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF  // F0..FF
-        }
-    };
-
-    const std::uint8_t d0 = hex_digit_table[data[0]];
-    const std::uint8_t d1 = hex_digit_table[data[1]];
-    const std::uint8_t d2 = hex_digit_table[data[2]];
-    const std::uint8_t d3 = hex_digit_table[data[3]];
-    // every valid digit is <= 0xF; the combined OR only exceeds it if at
-    // least one of the four bytes was not a hex digit (looked up as 0xFF)
-    if ((d0 | d1 | d2 | d3) > 0x0F)
-    {
-        return -1;
-    }
-    return (d0 << 12) | (d1 << 8) | (d2 << 4) | d3;
-}
-
 }  // namespace detail
 NLOHMANN_JSON_NAMESPACE_END
@@ -35,7 +35,7 @@ This class implements a both iterators (iterator and const_iterator) for the
      been set (e.g., by a constructor or a copy assignment). If the iterator is
      default-constructed, it is *uninitialized* and most methods are undefined.
      **The library uses assertions to detect calls on uninitialized iterators.**
-@requirement REQ-JSON-01 The class satisfies the following concept requirements:
+This class satisfies the following concept requirements (REQ-JSON-01):
 -
 [BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
  The iterator that can be moved can be moved in both directions (i.e.
@@ -213,11 +213,11 @@ namespace std
    JSON_HEDLEY_PRAGMA(clang diagnostic ignored "-Wmismatched-tags")
 #endif
 template<typename IteratorType>
-class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp)
+class tuple_size<::nlohmann::detail::iteration_proxy_value<IteratorType>> // NOLINT(cert-dcl58-cpp,bugprone-std-namespace-modification)
    : public std::integral_constant<std::size_t, 2> {};

 template<std::size_t N, typename IteratorType>
-class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp)
+class tuple_element<N, ::nlohmann::detail::iteration_proxy_value<IteratorType >> // NOLINT(cert-dcl58-cpp,bugprone-std-namespace-modification)
 {
  public:
    using type = decltype(
@@ -29,7 +29,7 @@ namespace detail
 iterator (to create @ref reverse_iterator) and @ref const_iterator (to
 create @ref const_reverse_iterator).

-@requirement REQ-JSON-02 The class satisfies the following concept requirements:
+This class satisfies the following concept requirements (REQ-JSON-02):
 -
 [BidirectionalIterator](https://en.cppreference.com/w/cpp/named_req/BidirectionalIterator):
  The iterator that can be moved can be moved in both directions (i.e.
@@ -278,11 +278,11 @@ class json_pointer
            JSON_THROW(detail::out_of_range::create(404, detail::concat("unresolved reference token '", s, "'"), nullptr));
        }

-        // only triggered on special platforms (like 32bit), see also
-        // https://github.com/nlohmann/json/pull/2203
+        // the index does not fit into size_type; on 64-bit platforms this is
+        // only SIZE_MAX itself (see #2203 and #5395)
        if (res >= static_cast<unsigned long long>((std::numeric_limits<size_type>::max)()))  // NOLINT(runtime/int)
        {
-            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));   // LCOV_EXCL_LINE
+            JSON_THROW(detail::out_of_range::create(410, detail::concat("array index ", s, " exceeds size_type"), nullptr));
        }

        return static_cast<size_type>(res);
@@ -316,7 +316,7 @@ class json_pointer
    /*!
    @brief create and return a reference to the pointed to value

-    @complexity Linear in the number of reference tokens.
+    Complexity: Linear in the number of reference tokens.

    @throw parse_error.106 if an array index begins with '0'
    @throw parse_error.109 if array index is not a number
@@ -403,7 +403,7 @@ class json_pointer

    @return reference to the JSON value pointed to by the JSON pointer

-    @complexity Linear in the length of the JSON pointer.
+    Complexity: Linear in the length of the JSON pointer.

    @throw parse_error.106   if an array index begins with '0'
    @throw parse_error.109   if an array index was not a number
@@ -195,13 +195,6 @@
    #define JSON_NO_THREAD_LOCAL 1
 #endif

-// disable documentation warnings on clang
-#if defined(__clang__)
-    #pragma clang diagnostic push
-    #pragma clang diagnostic ignored "-Wdocumentation"
-    #pragma clang diagnostic ignored "-Wdocumentation-unknown-command"
-#endif
-
 // allow disabling exceptions
 #if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
    #define JSON_THROW(exception) throw exception
@@ -260,7 +253,7 @@
    {                                                                                           \
        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        /* NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) we don't want to depend on <array> */ \
        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
        auto it = std::find_if(std::begin(m), std::end(m),                                      \
                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
@@ -274,7 +267,7 @@
    {                                                                                           \
        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        /* NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) we don't want to depend on <array> */ \
        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
        auto it = std::find_if(std::begin(m), std::end(m),                                      \
                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
@@ -313,7 +306,7 @@ void templated_json_throw(ExceptionType exception)
    {                                                                                           \
        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        /* NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) we don't want to depend on <array> */ \
        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
        auto it = std::find_if(std::begin(m), std::end(m),                                      \
                               [e](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool  \
@@ -328,7 +321,7 @@ void templated_json_throw(ExceptionType exception)
    {                                                                                           \
        /* NOLINTNEXTLINE(modernize-type-traits) we use C++11 */                                \
        static_assert(std::is_enum<ENUM_TYPE>::value, #ENUM_TYPE " must be an enum!");          \
-        /* NOLINTNEXTLINE(modernize-avoid-c-arrays) we don't want to depend on <array> */       \
+        /* NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) we don't want to depend on <array> */ \
        static const std::pair<ENUM_TYPE, BasicJsonType> m[] = __VA_ARGS__;                     \
        auto it = std::find_if(std::begin(m), std::end(m),                                      \
                               [&j](const std::pair<ENUM_TYPE, BasicJsonType>& ej_pair) -> bool \
@@ -8,11 +8,6 @@

 #pragma once

-// restore clang diagnostic settings
-#if defined(__clang__)
-    #pragma clang diagnostic pop
-#endif
-
 // clean up
 #undef JSON_ASSERT
 #undef JSON_INTERNAL_CATCH
@@ -13,6 +13,7 @@
 #include <iterator> // back_inserter
 #include <memory> // shared_ptr, make_shared
 #include <string> // basic_string
+#include <type_traits> // conditional, integral_constant, is_same
 #include <utility> // move
 #include <vector> // vector

@@ -117,12 +118,14 @@ class output_stream_adapter : public output_adapter_protocol<CharType>
        : stream(s)
    {}

+    // NOLINTNEXTLINE(portability-template-virtual-member-function)
    void write_character(CharType c) override
    {
        stream.put(c);
    }

    JSON_HEDLEY_NON_NULL(2)
+    // NOLINTNEXTLINE(portability-template-virtual-member-function)
    void write_characters(const CharType* s, std::size_t length) override
    {
        stream.write(s, static_cast<std::streamsize>(length));
@@ -190,7 +193,82 @@ class output_adapter_sink
    output_adapter_t<CharType> oa;
 };

-template<typename CharType, typename StringType = std::basic_string<CharType>>
+/// @brief whether std::basic_string<CharType> has a non-deprecated std::char_traits
+///        specialization, and is therefore usable as output_adapter's default StringType
+///
+/// std::char_traits is only guaranteed (and, on some standard libraries, only
+/// implemented without a deprecation warning) for the character types listed
+/// below; std::char_traits<T> for any other T (e.g. std::uint8_t, as used by the
+/// binary writers) is a non-standard extension some standard libraries deprecate.
+/// See https://github.com/nlohmann/json/issues/5725 item 2.
+template<typename CharType>
+struct is_output_adapter_string_char_type : std::integral_constant < bool,
+    std::is_same<CharType, char>::value ||
+    std::is_same<CharType, wchar_t>::value ||
+    std::is_same<CharType, char16_t>::value ||
+    std::is_same<CharType, char32_t>::value
+#if defined(__cpp_lib_char8_t) && (__cpp_lib_char8_t >= 201907L)
+    || std::is_same<CharType, char8_t>::value
+#endif
+    > {};
+
+/// @brief placeholder type for output_adapter's StringType and (with JSON_NO_IO
+///        undefined) its std::basic_ostream constructor parameter, for CharType
+///        with no non-deprecated std::char_traits specialization
+///
+/// Never actually used: the StringType- and std::basic_ostream-based
+/// output_adapter constructors are neither documented nor tested for such
+/// CharType (only the std::vector-based constructor is used for them, by the
+/// binary writers). Naming std::basic_string<CharType> or
+/// std::basic_ostream<CharType> anywhere such a constructor would otherwise be
+/// declared - even as an unused default template argument or an unused,
+/// never-called overload - instantiates std::char_traits<CharType> merely to
+/// name the type, which is exactly what triggers the deprecation warning this
+/// placeholder avoids.
+template<typename CharType>
+struct output_adapter_no_string_type {};
+
+// Select output_adapter's default StringType (and, below, its ostream
+// constructor's parameter type) via partial specialization, not
+// std::conditional: std::conditional<B, T, F> requires both T and F to be named
+// as template arguments up front, which would still instantiate (and thus name)
+// std::basic_string<CharType> / std::basic_ostream<CharType> for every CharType,
+// defeating the point. A bool non-type parameter with two specializations only
+// ever names the type that is actually selected.
+template<typename CharType, bool = is_output_adapter_string_char_type<CharType>::value>
+struct output_adapter_default_string_type
+{
+    using type = output_adapter_no_string_type<CharType>;
+};
+
+template<typename CharType>
+struct output_adapter_default_string_type<CharType, true>
+{
+    using type = std::basic_string<CharType>;
+};
+
+#ifndef JSON_NO_IO
+/// distinct from output_adapter_no_string_type, so the placeholder overloads of
+/// output_adapter's constructor (used when CharType is not a character type)
+/// stay distinct overloads instead of colliding into a single redeclaration
+template<typename CharType>
+struct output_adapter_no_ostream_type {};
+
+template<typename CharType, bool = is_output_adapter_string_char_type<CharType>::value>
+struct output_adapter_ostream_type
+{
+    using type = output_adapter_no_ostream_type<CharType>;
+};
+
+template<typename CharType>
+struct output_adapter_ostream_type<CharType, true>
+{
+    using type = std::basic_ostream<CharType>;
+};
+#endif  // JSON_NO_IO
+
+template < typename CharType, typename StringType =
+           typename output_adapter_default_string_type<CharType>::type >
 class output_adapter
 {
  public:
@@ -199,7 +277,7 @@ class output_adapter
        : oa(std::make_shared<output_vector_adapter<CharType, AllocatorType>>(vec)) {}

 #ifndef JSON_NO_IO
-    output_adapter(std::basic_ostream<CharType>& s)
+    output_adapter(typename output_adapter_ostream_type<CharType>::type& s)
        : oa(std::make_shared<output_stream_adapter<CharType>>(s)) {}
 #endif  // JSON_NO_IO

@@ -67,7 +67,7 @@ class serializer
    @param[in] ichar  indentation character to use
    @param[in] pretty_print_  whether the output shall be pretty-printed
    @param[in] ensure_ascii_ If @a ensure_ascii_ is true, all non-ASCII
-    characters in the output are escaped with `\uXXXX` sequences, and the
+    characters in the output are escaped with `\\uXXXX` sequences, and the
    result consists of ASCII characters only.
    @param[in] indent_step_  the indent level
    @param[in] error_handler_  how to react on decoding errors
@@ -772,7 +772,7 @@ class serializer

    @param[in] s  the string to escape

-    @complexity Linear in the length of string @a s.
+    Complexity: Linear in the length of string @a s.
    */
    void dump_escaped(const string_t& s)
    {
@@ -1290,7 +1290,7 @@ class serializer
    }

    /*!
-     * @brief write a lowercase "\uXXXX" escape sequence into @a string_buffer
+     * @brief write a lowercase "\\uXXXX" escape sequence into @a string_buffer
     *
     * Branch-free replacement for `snprintf(buf, 7, "\\u%04x", codeunit)` in the
     * string escaping hot path. It writes exactly six characters ('\\', 'u' and
@@ -1650,7 +1650,7 @@ class serializer
    /// whether to pretty-print the output
    const bool pretty_print;

-    /// whether to escape non-ASCII characters with \uXXXX sequences
+    /// whether to escape non-ASCII characters with \\uXXXX sequences
    const bool ensure_ascii;

    /// the indent level
@@ -62,8 +62,7 @@ inline StringType escape(const StringType& s)

 /*!
 * @brief string unescaping as described in RFC 6901 (Sect. 4)
- * @param[in] s string to unescape
- * @return    unescaped string
+ * @param[in,out] s string to unescape in place
 *
 * Note the order of escaping "~1" to "/" and "~0" to "~" is important.
 *
@@ -1,130 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <array> // array
-#include <cstddef> // size_t
-#include <cstring> // memcpy
-#include <new> // operator new, placement new
-#include <string> // string
-
-#include <nlohmann/json.hpp>
-#include <nlohmann/detail/view/macro_scope.hpp>
-#include <nlohmann/detail/view/node.hpp>
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace view
-{
-
-/// storage of a parsed document; heap-allocated (header and an initial node
-/// array in one block) so that views survive moves of the owning document
-struct document_data
-{
-    const char* src = nullptr;
-    std::size_t size = 0;
-    node* tape = nullptr;
-    std::size_t tape_size = 0;
-    std::size_t tape_cap = 0;
-    node* inline_tape = nullptr; ///< node array allocated together with this header
-    std::size_t inline_cap = 0;
-    std::string arena{}; ///< decoded strings that contained escapes // NOLINT(readability-redundant-member-init)
-    std::string owned{}; ///< owned copy of the input, if any // NOLINT(readability-redundant-member-init)
-    std::array<const char*, 4> base = {{nullptr, nullptr, nullptr, nullptr}}; ///< string bases: source, arena (indexed by flags & node_flags::storage)
-    bool discarded = true;
-
-    /// one allocation for the header and room for `nodes` nodes; large
-    /// documents get a separate node array instead (so it can be trimmed)
-    static document_data* create(std::size_t nodes)
-    {
-        nodes = nodes <= 256 ? nodes : 0;
-        void* mem = ::operator new (sizeof(document_data) + (nodes * sizeof(node)));
-        auto* d = new (mem) document_data(); // NOLINT(cppcoreguidelines-owning-memory): owned by the returned pointer, freed by deleter
-        // (aligned: sizeof is a multiple of the alignment; through void*, as GCC's -Wcast-align wants)
-        d->inline_tape = static_cast<node*>(static_cast<void*>(static_cast<char*>(mem) + sizeof(document_data))); // NOLINT(bugprone-casting-through-void)
-        d->inline_cap = nodes;
-        d->tape = d->inline_tape;
-        d->tape_cap = nodes;
-        return d;
-    }
-
-    struct deleter
-    {
-        void operator()(document_data* d) const noexcept
-        {
-            d->~document_data();
-            ::operator delete (d);
-        }
-    };
-
-    document_data() noexcept = default;
-    document_data(const document_data&) = delete;
-    document_data(document_data&&) = delete;
-    document_data& operator=(const document_data&) = delete;
-    document_data& operator=(document_data&&) = delete;
-    ~document_data()
-    {
-        release();
-    }
-
-    void release() noexcept
-    {
-        if (tape != inline_tape)
-        {
-            ::operator delete (tape);
-        }
-        tape = inline_tape;
-        tape_cap = inline_cap;
-    }
-
-    /// make room for n nodes; keeps the first tape_size nodes
-    void reserve(std::size_t n)
-    {
-        if (n <= tape_cap)
-        {
-            return;
-        }
-        node* fresh = static_cast<node*>(::operator new (n * sizeof(node)));
-        if (tape_size != 0)
-        {
-            std::memcpy(fresh, tape, tape_size * sizeof(node));
-        }
-        release();
-        tape = fresh;
-        tape_cap = n;
-    }
-
-    const char* str(const node& n) const noexcept
-    {
-        return base[n.flags & node_flags::storage] + n.off;
-    }
-
-    /// the node after n's subtree (containers span `next` nodes, scalars one)
-    static NLOHMANN_VIEW_ALWAYS_INLINE const node* after(const node* n) noexcept
-    {
-        return n + (is_container(*n) ? n->next : 1u);
-    }
-
-    /// first element (array) or first key (object) of a container
-    static NLOHMANN_VIEW_ALWAYS_INLINE const node* first_child(const node* n) noexcept
-    {
-        return n + 1;
-    }
-
-    /// end of the elements of a container
-    static NLOHMANN_VIEW_ALWAYS_INLINE const node* child_end(const node* n) noexcept
-    {
-        return n + n->next;
-    }
-};
-
-}  // namespace view
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
@@ -1,63 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-// Macros of json_view.hpp and its detail headers. json.hpp undefines its own
-// macros at its end (macro_unscope.hpp), so the view defines the few it needs
-// under its own prefix; json_view.hpp undefines them all at its end
-// (detail/view/macro_unscope.hpp). Configuration that json.hpp undefines is
-// read from detail::abi_config instead.
-
-#if (defined(__cplusplus) && __cplusplus >= 201703L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
-    #define NLOHMANN_VIEW_HAS_CPP_17 1
-#else
-    #define NLOHMANN_VIEW_HAS_CPP_17 0
-#endif
-
-#if defined(__GNUC__) || defined(__clang__)
-    #define NLOHMANN_VIEW_LIKELY(x) __builtin_expect(!!(x), 1)
-    #define NLOHMANN_VIEW_UNLIKELY(x) __builtin_expect(!!(x), 0)
-    #define NLOHMANN_VIEW_ALWAYS_INLINE inline __attribute__((always_inline))
-    #define NLOHMANN_VIEW_NOINLINE __attribute__((noinline))
-#elif defined(_MSC_VER)
-    #define NLOHMANN_VIEW_LIKELY(x) (x)
-    #define NLOHMANN_VIEW_UNLIKELY(x) (x)
-    #define NLOHMANN_VIEW_ALWAYS_INLINE __forceinline
-    #define NLOHMANN_VIEW_NOINLINE __declspec(noinline)
-#else
-    #define NLOHMANN_VIEW_LIKELY(x) (x)
-    #define NLOHMANN_VIEW_UNLIKELY(x) (x)
-    #define NLOHMANN_VIEW_ALWAYS_INLINE inline
-    #define NLOHMANN_VIEW_NOINLINE
-#endif
-
-// exceptions as in json.hpp (JSON_NOEXCEPTION, JSON_THROW_USER)
-#if (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)) && !defined(JSON_NOEXCEPTION)
-    #define NLOHMANN_VIEW_THROW(exception) throw exception
-#else
-    #include <cstdlib>
-    // (the exception is built first, so that the arguments of the throwing
-    // helpers count as used; the program ends anyway)
-    #define NLOHMANN_VIEW_THROW(exception) (static_cast<void>(exception), std::abort())
-#endif
-#if defined(JSON_THROW_USER)
-    #undef NLOHMANN_VIEW_THROW
-    #define NLOHMANN_VIEW_THROW JSON_THROW_USER
-#endif
-
-// the parser stores a node's first word at once where the layout of `node` is
-// known to be little-endian (MSVC targets are); elsewhere field by field
-#if (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || defined(_MSC_VER)
-    #define NLOHMANN_VIEW_LITTLE_ENDIAN 1
-#else
-    #define NLOHMANN_VIEW_LITTLE_ENDIAN 0
-#endif
-
-/// sixteen checks at fixed offsets 0..15
-#define NLOHMANN_VIEW_REPEAT16(X) X(0) X(1) X(2) X(3) X(4) X(5) X(6) X(7) X(8) X(9) X(10) X(11) X(12) X(13) X(14) X(15)
@@ -1,20 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-// undefine the macros of detail/view/macro_scope.hpp (at the end of json_view.hpp)
-
-#undef NLOHMANN_VIEW_HAS_CPP_17
-#undef NLOHMANN_VIEW_LIKELY
-#undef NLOHMANN_VIEW_UNLIKELY
-#undef NLOHMANN_VIEW_ALWAYS_INLINE
-#undef NLOHMANN_VIEW_NOINLINE
-#undef NLOHMANN_VIEW_THROW
-#undef NLOHMANN_VIEW_LITTLE_ENDIAN
-#undef NLOHMANN_VIEW_REPEAT16
@@ -1,97 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <cstddef> // size_t
-#include <cstdint> // uint8_t, uint16_t, uint32_t, uint64_t
-#include <cstring> // memcpy
-
-#include <nlohmann/json.hpp>
-#include <nlohmann/detail/view/macro_scope.hpp>
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace view
-{
-
-// the node kinds are value_t values; the tests of is_container() and of the
-// number kinds depend on this numbering
-static_assert(static_cast<std::uint8_t>(value_t::null) == 0 && static_cast<std::uint8_t>(value_t::object) == 1
-              && static_cast<std::uint8_t>(value_t::array) == 2 && static_cast<std::uint8_t>(value_t::string) == 3
-              && static_cast<std::uint8_t>(value_t::boolean) == 4 && static_cast<std::uint8_t>(value_t::number_integer) == 5
-              && static_cast<std::uint8_t>(value_t::number_unsigned) == 6 && static_cast<std::uint8_t>(value_t::number_float) == 7,
-              "the node format depends on the numbering of value_t");
-
-/// node flags
-struct node_flags
-{
-    static constexpr std::uint8_t escaped = 1; ///< string payload lives in the decode arena, not the source
-    static constexpr std::uint8_t storage = 3; ///< mask: where a string or number token lives (index into document_data::base)
-    static constexpr std::uint8_t is_true = 4; ///< boolean value
-};
-
-/// One entry of the flat index, in document order. An object's members are
-/// stored as key node followed by the value's subtree. Integers keep their
-/// converted 64-bit value in the len/next bytes (the node after a scalar is
-/// always the next one, and the token length follows from `extra`).
-struct node
-{
-    std::uint8_t kind;   ///< value_t
-    std::uint8_t flags;  ///< node_flags
-    std::uint16_t extra; ///< numbers: integer digits (low byte) and fraction digits (high byte), 255 = "many"; otherwise 0
-    std::uint32_t off;   ///< source offset (string content, number token, literal, bracket); arena offset if node_flags::escaped
-    std::uint32_t len;   ///< string: decoded bytes; float: token bytes; array/object: element count
-    std::uint32_t next;  ///< array/object: number of nodes of the subtree (its extent in the enclosing sequence)
-};
-static_assert(sizeof(node) == 16, "node must stay 16 bytes");
-
-NLOHMANN_VIEW_ALWAYS_INLINE bool is_container(const node& n) noexcept
-{
-    return static_cast<unsigned>(n.kind) - 1u <= 1u;
-}
-
-/// the converted value of an integer node (stored in len/next)
-NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t integer_bits(const node& n) noexcept
-{
-    std::uint64_t v = 0;
-    std::memcpy(&v, reinterpret_cast<const unsigned char*>(&n) + 8, 8); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
-    return v;
-}
-
-NLOHMANN_VIEW_ALWAYS_INLINE void set_integer_bits(node& n, std::uint64_t v) noexcept
-{
-    std::memcpy(reinterpret_cast<unsigned char*>(&n) + 8, &v, 8); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
-}
-
-/// token length of a number node
-NLOHMANN_VIEW_ALWAYS_INLINE std::uint32_t number_length(const node& n) noexcept
-{
-    return n.kind == static_cast<std::uint8_t>(value_t::number_float) ? n.len
-           : (n.extra & 0xFFu) + (n.kind == static_cast<std::uint8_t>(value_t::number_integer) ? 1u : 0u);
-}
-
-/// estimated number of nodes for an input of `size` bytes (one node per ~12
-/// bytes covers typical documents without regrowth)
-inline std::size_t estimate_nodes(std::size_t size) noexcept
-{
-    return (size / 12) + 16;
-}
-
-/// estimated number of nodes for the input [src, src + size): pretty-printed
-/// input (whitespace after the first byte) needs about a node per 12 bytes,
-/// minified input up to one per 4 (yyjson tells the two apart the same way)
-inline std::size_t estimate_nodes(const char* src, std::size_t size) noexcept
-{
-    return size >= 2 && (src[1] == ' ' || src[1] == '\n' || src[1] == '\r' || src[1] == '\t') ? estimate_nodes(size) : (size / 4) + 16;
-}
-
-}  // namespace view
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
@@ -1,189 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-FileCopyrightText: 2020 YaoYuan <https://github.com/ibireme/yyjson>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <array> // array
-#include <cstddef> // size_t
-#include <cstdint> // uint8_t, uint16_t, uint64_t
-#include <cstring> // memcpy
-
-#include <nlohmann/json.hpp>
-#include <nlohmann/detail/view/macro_scope.hpp>
-
-// Scanning primitives of the view's parser. The unrolled checks at fixed
-// offsets follow yyjson (https://github.com/ibireme/yyjson, MIT license): the
-// loads do not depend on each other, so the CPU can run ahead. Words are read
-// with read_eight_bytes(), so nothing here depends on the byte order.
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace view
-{
-
-/// 1 for bytes that may appear verbatim in a string: 0x20..0x7F except '"' and '\\'
-inline const std::uint8_t* string_plain() noexcept
-{
-    static const std::array<std::uint8_t, 256> table =
-    {
-        {
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x00..0x1F
-            1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x20..0x3F ('"')
-            1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, // 0x40..0x5F ('\\')
-            1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x60..0x7F
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x80..0x9F
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xA0..0xBF
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xC0..0xDF
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0xE0..0xFF
-        }
-    };
-    return table.data();
-}
-
-NLOHMANN_VIEW_ALWAYS_INLINE bool is_digit(unsigned char c) noexcept
-{
-    return static_cast<unsigned char>(c - '0') <= 9;
-}
-
-/// two bytes as they are in memory (only compared with byte-symmetric patterns)
-NLOHMANN_VIEW_ALWAYS_INLINE std::uint16_t load16(const unsigned char* p) noexcept
-{
-    std::uint16_t w = 0;
-    std::memcpy(&w, p, 2);
-    return w;
-}
-
-/// Advance over plain string bytes and well-formed UTF-8. Stops at a quote,
-/// a backslash, a control character, ill-formed UTF-8, or the end. The first
-/// 16 bytes are checked one by one, so that the position advances by
-/// constants in predicted branches (most strings are short); longer runs
-/// continue eight bytes at a time.
-NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* scan_string_run(const unsigned char* p, const unsigned char* e) noexcept
-{
-    const std::uint8_t* plain = string_plain();
-    for (;;)
-    {
-        if (e - p >= 16)
-        {
-#define NLOHMANN_VIEW_STEP(i) if (NLOHMANN_VIEW_LIKELY(plain[p[i]] != 0)) {} else { p += (i); goto stop; }
-            NLOHMANN_VIEW_REPEAT16(NLOHMANN_VIEW_STEP)
-#undef NLOHMANN_VIEW_STEP
-            p += 16;
-            while (e - p >= 8)
-            {
-                const std::uint64_t special = swar_string_special(read_eight_bytes(p));
-                if (special != 0)
-                {
-                    p += count_trailing_zeros(special) / 8;
-                    goto stop;
-                }
-                p += 8;
-            }
-            continue;
-        }
-        while (p != e && plain[*p] != 0)
-        {
-            ++p;
-        }
-        if (p == e)
-        {
-            return p;
-        }
-stop:
-        if (*p < 0x80)
-        {
-            return p; // quote, backslash, or control character
-        }
-        // non-ASCII: a run of well-formed sequences (the library's check, so
-        // that exactly what json::parse accepts is accepted)
-        do
-        {
-            const std::size_t n = validate_one_utf8(p, static_cast<std::size_t>(e - p));
-            if (n == 0)
-            {
-                return p;
-            }
-            p += n;
-        }
-        while (p != e && *p >= 0x80);
-    }
-}
-
-/// advance over ASCII digits
-NLOHMANN_VIEW_ALWAYS_INLINE const unsigned char* skip_digits(const unsigned char* p, const unsigned char* e) noexcept
-{
-    while (e - p >= 16)
-    {
-#define NLOHMANN_VIEW_STEP(i) if (NLOHMANN_VIEW_LIKELY(is_digit(p[i]))) {} else { return p + (i); }
-        NLOHMANN_VIEW_REPEAT16(NLOHMANN_VIEW_STEP)
-#undef NLOHMANN_VIEW_STEP
-        p += 16;
-    }
-    while (p != e && is_digit(*p))
-    {
-        ++p;
-    }
-    return p;
-}
-
-/// powers of ten up to 10^19 as integers
-inline std::uint64_t int_pow10(unsigned k) noexcept
-{
-    static const std::array<std::uint64_t, 20> table =
-    {
-        {
-            1u, 10u, 100u, 1000u, 10000u, 100000u, 1000000u, 10000000u, 100000000u, 1000000000u,
-            10000000000u, 100000000000u, 1000000000000u, 10000000000000u, 100000000000000u, 1000000000000000u,
-            10000000000000000u, 100000000000000000u, 1000000000000000000u, 10000000000000000000u
-        }
-    };
-    return table[k];
-}
-
-/// value of 0 < k < 8 digits at p in one step if [p, p + 8) lies below
-/// limit, else one digit at a time (whole blocks of eight digits are read by
-/// parse_upto19() directly)
-NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t parse_upto8(const unsigned char* p, unsigned k, const unsigned char* limit) noexcept
-{
-    if (NLOHMANN_VIEW_LIKELY(limit - p >= 8))
-    {
-        // move the k digits to the top and pad the vacated low bytes with '0'
-        const unsigned shift = 8 * (8 - k);
-        return parse_eight_digits((read_eight_bytes(p) << shift) | (0x3030303030303030u >> (8 * k)));
-    }
-    std::uint64_t v = 0;
-    for (unsigned i = 0; i < k; ++i)
-    {
-        v = (v * 10) + static_cast<std::uint64_t>(p[i] - '0');
-    }
-    return v;
-}
-
-/// value of k <= 19 digits at p
-NLOHMANN_VIEW_ALWAYS_INLINE std::uint64_t parse_upto19(const unsigned char* p, unsigned k, const unsigned char* limit) noexcept
-{
-    std::uint64_t w = 0;
-    while (k >= 8)
-    {
-        // (eight digits of the token: they lie below limit)
-        w = (w * 100000000u) + parse_eight_digits(read_eight_bytes(p));
-        p += 8;
-        k -= 8;
-    }
-    if (k != 0)
-    {
-        w = (w * int_pow10(k)) + parse_upto8(p, k, limit);
-    }
-    return w;
-}
-
-}  // namespace view
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
@@ -1,111 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <algorithm> // min
-#include <cstddef> // size_t
-#include <cstring> // memcmp, strlen
-#include <string> // basic_string
-
-#include <nlohmann/json.hpp>
-#include <nlohmann/detail/view/macro_scope.hpp>
-
-#if NLOHMANN_VIEW_HAS_CPP_17
-    #include <string_view> // string_view
-#endif
-#ifndef JSON_NO_IO
-    #include <ostream> // ostream
-#endif
-
-NLOHMANN_JSON_NAMESPACE_BEGIN
-namespace detail
-{
-namespace view
-{
-
-#if NLOHMANN_VIEW_HAS_CPP_17
-using string_ref = std::string_view;
-#else
-/// minimal C++11 stand-in for std::string_view
-class string_ref
-{
-  public:
-    using size_type = std::size_t;
-    using const_iterator = const char*;
-
-    string_ref() noexcept = default;
-    string_ref(const char* s) : m_data(s), m_size(std::strlen(s)) {} // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
-    string_ref(const char* s, std::size_t n) noexcept : m_data(s), m_size(n) {}
-    template<typename Traits, typename Alloc>
-    string_ref(const std::basic_string<char, Traits, Alloc>& s) noexcept : m_data(s.data()), m_size(s.size()) {} // NOLINT(google-explicit-constructor,hicpp-explicit-conversions)
-
-    const char* data() const noexcept
-    {
-        return m_data;
-    }
-    std::size_t size() const noexcept
-    {
-        return m_size;
-    }
-    std::size_t length() const noexcept
-    {
-        return m_size;
-    }
-    bool empty() const noexcept
-    {
-        return m_size == 0;
-    }
-    const char* begin() const noexcept
-    {
-        return m_data;
-    }
-    const char* end() const noexcept
-    {
-        return m_data + m_size;
-    }
-    char operator[](std::size_t i) const noexcept
-    {
-        return m_data[i];
-    }
-
-    template<typename Traits, typename Alloc>
-    explicit operator std::basic_string<char, Traits, Alloc>() const
-    {
-        return std::basic_string<char, Traits, Alloc>(m_data, m_size);
-    }
-
-    friend bool operator==(string_ref a, string_ref b) noexcept
-    {
-        return a.m_size == b.m_size && (a.m_size == 0 || std::memcmp(a.m_data, b.m_data, a.m_size) == 0);
-    }
-    friend bool operator!=(string_ref a, string_ref b) noexcept
-    {
-        return !(a == b);
-    }
-    friend bool operator<(string_ref a, string_ref b) noexcept
-    {
-        const int c = std::memcmp(a.m_data, b.m_data, (std::min)(a.m_size, b.m_size));
-        return c != 0 ? c < 0 : a.m_size < b.m_size;
-    }
-#ifndef JSON_NO_IO
-    friend std::ostream& operator<<(std::ostream& o, string_ref s)
-    {
-        return o.write(s.m_data, static_cast<std::streamsize>(s.m_size));
-    }
-#endif
-
-  private:
-    const char* m_data = "";
-    std::size_t m_size = 0;
-};
-#endif
-
-}  // namespace view
-}  // namespace detail
-NLOHMANN_JSON_NAMESPACE_END
@@ -18,16 +18,6 @@
 #ifndef INCLUDE_NLOHMANN_JSON_HPP_
 #define INCLUDE_NLOHMANN_JSON_HPP_

-// Workaround for GCC template redefinition errors in C++ modules
-// When nlohmann/json.hpp is included in a C++20 module preamble after
-// other module imports, GCC may report spurious redefinition errors for
-// STL templates. These pragmas suppress those false positives.
-// See: https://github.com/nlohmann/json/issues/5103
-#if defined(__GNUC__) && !defined(__clang__) && __cplusplus >= 202002L
-    #pragma GCC diagnostic push
-    #pragma GCC diagnostic ignored "-Wignored-attributes"
-#endif
-
 #include <algorithm> // all_of, find, for_each, none_of
 #include <cstddef> // nullptr_t, ptrdiff_t, size_t
 #include <functional> // hash, less
@@ -45,7 +35,6 @@

 #include <nlohmann/adl_serializer.hpp>
 #include <nlohmann/byte_container_with_subtype.hpp>
-#include <nlohmann/detail/abi_config.hpp>
 #include <nlohmann/detail/conversions/from_json.hpp>
 #include <nlohmann/detail/conversions/to_json.hpp>
 #include <nlohmann/detail/exceptions.hpp>
@@ -2351,12 +2340,12 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec

    @throw what @ref json_serializer<ValueType> `from_json()` method throws

-    @liveexample{The example below shows several conversions from JSON values
+    The example below shows several conversions from JSON values
    to other types. There a few things to note: (1) Floating-point numbers can
-    be converted to integers\, (2) A JSON array can be converted to a standard
-    `std::vector<short>`\, (3) A JSON object can be converted to C++
-    associative containers such as `std::unordered_map<std::string\,
-    json>`.,get__ValueType_const}
+    be converted to integers, (2) A JSON array can be converted to a standard
+    `std::vector<short>`, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string,
+    json>`.

    @since version 2.1.0
    */
@@ -2423,7 +2412,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec

    @return a copy of *this, converted into @a BasicJsonType

-    @complexity Depending on the implementation of the called `from_json()`
+    Complexity: Depending on the implementation of the called `from_json()`
                method.

    @since version 3.2.0
@@ -2447,7 +2436,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec

    @return a copy of *this

-    @complexity Constant.
+    Complexity: Constant.

    @since version 2.1.0
    */
@@ -2493,7 +2482,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    @tparam ValueTypeCV the provided value type
    @tparam ValueType the returned value type

-    @return copy of the JSON value, converted to @tparam ValueType if necessary
+    @return copy of the JSON value, converted to @a ValueType if necessary

    @throw what @ref json_serializer<ValueType> `from_json()` method throws if conversion is required

@@ -2531,12 +2520,12 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    @return pointer to the internally stored JSON value if the requested
    pointer type @a PointerType fits to the JSON value; `nullptr` otherwise

-    @complexity Constant.
+    Complexity: Constant.

-    @liveexample{The example below shows how pointers to internal values of a
+    The example below shows how pointers to internal values of a
    JSON value can be requested. Note that no type conversions are made and a
    `nullptr` is returned if the value and the requested pointer type does not
-    match.,get__PointerType}
+    match.

    @sa see @ref get_ptr() for explicit pointer-member access

@@ -2630,14 +2619,14 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    to the JSON value type (e.g., the JSON value is of type boolean, but a
    string is requested); see example below

-    @complexity Linear in the size of the JSON value.
+    Complexity: Linear in the size of the JSON value.

-    @liveexample{The example below shows several conversions from JSON values
+    The example below shows several conversions from JSON values
    to other types. There a few things to note: (1) Floating-point numbers can
-    be converted to integers\, (2) A JSON array can be converted to a standard
-    `std::vector<short>`\, (3) A JSON object can be converted to C++
-    associative containers such as `std::unordered_map<std::string\,
-    json>`.,operator__ValueType}
+    be converted to integers, (2) A JSON array can be converted to a standard
+    `std::vector<short>`, (3) A JSON object can be converted to C++
+    associative containers such as `std::unordered_map<std::string,
+    json>`.

    @since version 1.0.0
    */
@@ -5060,6 +5049,19 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
    /// @deprecated This function is deprecated since 3.8.0 and will be removed in
    ///             version 4.0.0 of the library. Please use
    ///             sax_parse(ptr, ptr + len) instead.
+    //
+    // Clang reports "declaration is marked with '@deprecated' command but does
+    // not have a deprecation attribute" for this overload even though
+    // JSON_HEDLEY_DEPRECATED_FOR below does expand to __attribute__((deprecated));
+    // isolated reproductions of this exact declaration shape (doc comment,
+    // template<>, two stacked __attribute__ lines, an overload set of the same
+    // name) do not reproduce it, so this looks like a Clang comment/declaration
+    // association quirk specific to this overload within basic_json, not a
+    // genuine documentation bug. See #5725 item 2.
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdocumentation-deprecated-sync"
+#endif
    template <typename SAX>
    JSON_HEDLEY_DEPRECATED_FOR(3.8.0, sax_parse(ptr, ptr + len, ...))
    JSON_HEDLEY_NON_NULL(2)
@@ -5076,6 +5078,9 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
               // NOLINTNEXTLINE(hicpp-move-const-arg,performance-move-const-arg)
               : detail::binary_reader<basic_json, decltype(ia), SAX>(std::move(ia), format).sax_parse(format, sax, strict);
    }
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
 #ifndef JSON_NO_IO
    /// @brief deserialize from stream
    /// @sa https://json.nlohmann.me/api/basic_json/operator_gtgt/
@@ -6496,7 +6501,7 @@ namespace std // NOLINT(cert-dcl58-cpp)
 /// @brief hash value for JSON objects
 /// @sa https://json.nlohmann.me/api/basic_json/std_hash/
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
-struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp)
+struct hash<nlohmann::NLOHMANN_BASIC_JSON_TPL> // NOLINT(cert-dcl58-cpp,bugprone-std-namespace-modification)
 {
    std::size_t operator()(const nlohmann::NLOHMANN_BASIC_JSON_TPL& j) const
    {
@@ -6529,7 +6534,7 @@ struct less< ::nlohmann::detail::value_t> // do not remove the space after '<',
 /// @brief exchanges the values of two JSON objects
 /// @sa https://json.nlohmann.me/api/basic_json/std_swap/
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
-inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp)
+inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC_JSON_TPL& j2) noexcept(  // NOLINT(readability-inconsistent-declaration-parameter-name, cert-dcl58-cpp,bugprone-std-namespace-modification)
    is_nothrow_move_constructible<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value&&                          // NOLINT(misc-redundant-expression,cppcoreguidelines-noexcept-swap,performance-noexcept-swap)
    is_nothrow_move_assignable<nlohmann::NLOHMANN_BASIC_JSON_TPL>::value)
 {
@@ -6543,7 +6548,7 @@ inline void swap(nlohmann::NLOHMANN_BASIC_JSON_TPL& j1, nlohmann::NLOHMANN_BASIC
 /// @brief std::formatter specialization for JSON values
 /// @sa https://json.nlohmann.me/api/basic_json/std_formatter/
 NLOHMANN_BASIC_JSON_TPL_DECLARATION
-struct formatter<nlohmann::NLOHMANN_BASIC_JSON_TPL, char> // NOLINT(cert-dcl58-cpp)
+struct formatter<nlohmann::NLOHMANN_BASIC_JSON_TPL, char> // NOLINT(cert-dcl58-cpp,bugprone-std-namespace-modification)
 {
    // -1 means compact output (dump()); any value >= 0 means pretty-printed
    // output with that many spaces (or indent_char) per level (dump(indent, indent_char)).
@@ -6620,11 +6625,6 @@ struct formatter<nlohmann::NLOHMANN_BASIC_JSON_TPL, char> // NOLINT(cert-dcl58-c

 #include <nlohmann/detail/macro_unscope.hpp>

-// End of GCC diagnostic pragmas for C++ modules support
-#if defined(__GNUC__) && !defined(__clang__) && __cplusplus >= 202002L
-    #pragma GCC diagnostic pop
-#endif
-
 // The user-defined string literals are in a separate header, because their
 // bodies instantiate the parser in every translation unit that includes them.
 // Define JSON_NO_AUTOMATIC_UDLS to include <nlohmann/json_literals.hpp> only
@@ -90,11 +90,11 @@ target_compile_options(test_main PUBLIC
    # https://github.com/nlohmann/json/pull/3229
    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=2196>

-    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=1786>)
+target_include_directories(test_main SYSTEM PUBLIC
+    thirdparty/doctest)
 target_include_directories(test_main PUBLIC
-    thirdparty/doctest
    thirdparty/fifo_map
    ${PROJECT_BINARY_DIR}/include)
 target_link_libraries(test_main PUBLIC ${NLOHMANN_JSON_TARGET_NAME})
@@ -279,10 +279,6 @@ if(json_32bit_test_only)
 elseif(NOT json_32bit_test)
    list(FILTER files EXCLUDE REGEX src/unit-32bit.cpp)
 endif()
-if(NOT JSON_MultipleHeaders)
-    # the internal headers of json_view are not part of a single header yet
-    list(FILTER files EXCLUDE REGEX src/unit-json_view_builder.cpp)
-endif()

 foreach(file ${files})
    json_test_add_test_for(${file} MAIN test_main CXX_STANDARDS ${test_cxx_standards} ${test_force})
@@ -12,7 +12,6 @@ target_compile_options(abi_compat_common INTERFACE
    # https://github.com/nlohmann/json/pull/3229
    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=2196>

-    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated;-Wno-float-equal>
    $<$<CXX_COMPILER_ID:GNU>:-Wno-deprecated-declarations>
    $<$<CXX_COMPILER_ID:Intel>:-diag-disable=1786>)
 target_include_directories(abi_compat_common SYSTEM INTERFACE
@@ -28,7 +28,7 @@ std::string namespace_name(std::string ns, T* /*unused*/ = nullptr) // NOLINT(pe
    std::smatch m;

    // extract the true namespace name from the function signature
-    CAPTURE(ns);
+    CAPTURE(ns)
    CHECK(std::regex_search(ns, m, std::regex("nlohmann(::[a-zA-Z0-9_]+)*::basic_json")));

    return m.str();
@@ -1,599 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#pragma once
-
-#include <array> // array
-#include <cstdint> // uint32_t, uint64_t
-
-// Number tokens that are hard to round correctly, with the IEEE-754 binary64
-// and binary32 bits of their correctly rounded values (ties to even; infinity
-// for an overflow, a signed zero for an underflow).
-//
-// For doubles and floats around 0, the smallest normal number, 1, 2^24, 2^53,
-// 0.1, and the largest finite number, and for random ones, the exact midpoint
-// m to the next number gives: m, m with one unit more and less in the last
-// digit, m with "01" and "0...01" appended, m with trailing zeros, and m cut
-// after 17 to 30 digits (rounded down and up, so that the rounding is decided
-// after the 19th digit), in fixed and exponent notation, 30% of them negative.
-// Tokens longer than 80 characters are left out, except for four of 700 digits
-// and more. Zeros, underflow, overflow, huge exponents, and integers beyond 64
-// bits complete the set. Of the 508 tokens, 134 (as double) and 150 (as
-// float) need the exact comparison with the midpoint (detail::digit_comparison()).
-//
-// The expected bits were computed with exact rational arithmetic in Python
-// (fractions.Fraction) and cross-checked with Python's float(); strtod_l and
-// strtof_l of Apple's libc and of glibc agree. Generated by
-// compact_hard_cases.py 5 (with hard_cases.py), see the pull request that
-// added this file.
-
-namespace float_hard_cases
-{
-
-struct hard_case
-{
-    const char* token;
-    std::uint64_t bits64;
-    std::uint32_t bits32;
-};
-
-inline const std::array<hard_case, 508>& cases()
-{
-    static const std::array<hard_case, 508> table =
-    {
-        {
-            {"-2.4703282292062327e-324", 0x8000000000000000u, 0x80000000u},
-            {"24703282292062328e-340", 0x0000000000000001u, 0x00000000u},
-            {"247032822920623272e-341", 0x0000000000000000u, 0x00000000u},
-            {"-0.2470328229206232721e-323", 0x8000000000000001u, 0x80000000u},
-            {"-0.24703282292062327208e-323", 0x8000000000000000u, 0x80000000u},
-            {"-2.4703282292062327209e-324", 0x8000000000000001u, 0x80000000u},
-            {"2.47032822920623272088e-324", 0x0000000000000000u, 0x00000000u},
-            {"247032822920623272089e-344", 0x0000000000000001u, 0x00000000u},
-            {"-247032822920623272088284396434e-353", 0x8000000000000000u, 0x80000000u},
-            {"0.247032822920623272088284396435e-323", 0x0000000000000001u, 0x00000000u},
-            {"-74109846876186981e-340", 0x8000000000000001u, 0x80000000u},
-            {"0.74109846876186982e-323", 0x0000000000000002u, 0x00000000u},
-            {"-0.7410984687618698162e-323", 0x8000000000000001u, 0x80000000u},
-            {"-7.410984687618698163e-324", 0x8000000000000002u, 0x80000000u},
-            {"7.4109846876186981626e-324", 0x0000000000000001u, 0x00000000u},
-            {"-74109846876186981627e-343", 0x8000000000000002u, 0x80000000u},
-            {"-741098468761869816264e-344", 0x8000000000000001u, 0x80000000u},
-            {"0.741098468761869816265e-323", 0x0000000000000002u, 0x00000000u},
-            {"0.741098468761869816264853189302e-323", 0x0000000000000001u, 0x00000000u},
-            {"-7.41098468761869816264853189303e-324", 0x8000000000000002u, 0x80000000u},
-            {"0.22250738585072006e-307", 0x000FFFFFFFFFFFFEu, 0x00000000u},
-            {"2.2250738585072007e-308", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"2.225073858507200641e-308", 0x000FFFFFFFFFFFFEu, 0x00000000u},
-            {"-2225073858507200642e-326", 0x800FFFFFFFFFFFFFu, 0x80000000u},
-            {"22250738585072006419e-327", 0x000FFFFFFFFFFFFEu, 0x00000000u},
-            {"0.2225073858507200642e-307", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"0.222507385850720064199e-307", 0x000FFFFFFFFFFFFEu, 0x00000000u},
-            {"2.225073858507200642e-308", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"-2.22507385850720064199176395546e-308", 0x800FFFFFFFFFFFFEu, 0x80000000u},
-            {"222507385850720064199176395547e-337", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"-2.2250738585072011e-308", 0x800FFFFFFFFFFFFFu, 0x80000000u},
-            {"-22250738585072012e-324", 0x8010000000000000u, 0x80000000u},
-            {"-2225073858507201136e-326", 0x800FFFFFFFFFFFFFu, 0x80000000u},
-            {"0.2225073858507201137e-307", 0x0010000000000000u, 0x00000000u},
-            {"0.2225073858507201136e-307", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"-2.2250738585072011361e-308", 0x8010000000000000u, 0x80000000u},
-            {"2.22507385850720113605e-308", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"222507385850720113606e-328", 0x0010000000000000u, 0x00000000u},
-            {"22250738585072011360574097967e-336", 0x000FFFFFFFFFFFFFu, 0x00000000u},
-            {"0.222507385850720113605740979671e-307", 0x0010000000000000u, 0x00000000u},
-            {"22250738585072016e-324", 0x0010000000000000u, 0x00000000u},
-            {"0.22250738585072017e-307", 0x0010000000000001u, 0x00000000u},
-            {"0.222507385850720163e-307", 0x0010000000000000u, 0x00000000u},
-            {"2.225073858507201631e-308", 0x0010000000000001u, 0x00000000u},
-            {"-2.2250738585072016301e-308", 0x8010000000000000u, 0x80000000u},
-            {"22250738585072016302e-327", 0x0010000000000001u, 0x00000000u},
-            {"-222507385850720163012e-328", 0x8010000000000000u, 0x80000000u},
-            {"0.222507385850720163013e-307", 0x0010000000000001u, 0x00000000u},
-            {"0.222507385850720163012305563795e-307", 0x0010000000000000u, 0x00000000u},
-            {"-2.22507385850720163012305563796e-308", 0x8010000000000001u, 0x80000000u},
-            {"0.17976931348623156E+309", 0x7FEFFFFFFFFFFFFEu, 0x7F800000u},
-            {"1.7976931348623157e308", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"1.797693134862315608e308", 0x7FEFFFFFFFFFFFFEu, 0x7F800000u},
-            {"-1797693134862315609e290", 0xFFEFFFFFFFFFFFFFu, 0xFF800000u},
-            {"-17976931348623156083e289", 0xFFEFFFFFFFFFFFFEu, 0xFF800000u},
-            {"-0.17976931348623156084E+309", 0xFFEFFFFFFFFFFFFFu, 0xFF800000u},
-            {"0.179769313486231560835E+309", 0x7FEFFFFFFFFFFFFEu, 0x7F800000u},
-            {"-1.79769313486231560836e308", 0xFFEFFFFFFFFFFFFFu, 0xFF800000u},
-            {"1.79769313486231560835325876058e308", 0x7FEFFFFFFFFFFFFEu, 0x7F800000u},
-            {"179769313486231560835325876059e279", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"1.7976931348623158e308", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"17976931348623159e292", 0x7FF0000000000000u, 0x7F800000u},
-            {"1797693134862315807e290", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"0.1797693134862315808E+309", 0x7FF0000000000000u, 0x7F800000u},
-            {"0.17976931348623158079E+309", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"-1.797693134862315808e308", 0xFFF0000000000000u, 0xFF800000u},
-            {"1.79769313486231580793e308", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"179769313486231580794e288", 0x7FF0000000000000u, 0x7F800000u},
-            {"179769313486231580793728971405e279", 0x7FEFFFFFFFFFFFFFu, 0x7F800000u},
-            {"-0.179769313486231580793728971406E+309", 0xFFF0000000000000u, 0xFF800000u},
-            {"100000000000000011102230246251565404236316680908203125e-53", 0x3FF0000000000000u, 0x3F800000u},
-            {"-1.00000000000000011102230246251565404236316680908203126", 0xBFF0000000000001u, 0xBF800000u},
-            {"1.00000000000000011102230246251565404236316680908203124e0", 0x3FF0000000000000u, 0x3F800000u},
-            {"10000000000000001110223024625156540423631668090820312501e-55", 0x3FF0000000000001u, 0x3F800000u},
-            {"1.00000000000000011102230246251565404236316680908203125000000000000000000001", 0x3FF0000000000001u, 0x3F800000u},
-            {"10000000000000001e-16", 0x3FF0000000000000u, 0x3F800000u},
-            {"1.0000000000000002", 0x3FF0000000000001u, 0x3F800000u},
-            {"1.000000000000000111", 0x3FF0000000000000u, 0x3F800000u},
-            {"1.000000000000000112e0", 0x3FF0000000000001u, 0x3F800000u},
-            {"1.000000000000000111e0", 0x3FF0000000000000u, 0x3F800000u},
-            {"-10000000000000001111e-19", 0xBFF0000000000001u, 0xBF800000u},
-            {"-100000000000000011102e-20", 0xBFF0000000000000u, 0xBF800000u},
-            {"-1.00000000000000011103", 0xBFF0000000000001u, 0xBF800000u},
-            {"1.00000000000000011102230246251", 0x3FF0000000000000u, 0x3F800000u},
-            {"1.00000000000000011102230246252e0", 0x3FF0000000000001u, 0x3F800000u},
-            {"-0.999999999999999944488848768742172978818416595458984375", 0xBFF0000000000000u, 0xBF800000u},
-            {"-9.99999999999999944488848768742172978818416595458984376e-1", 0xBFF0000000000000u, 0xBF800000u},
-            {"999999999999999944488848768742172978818416595458984374e-54", 0x3FEFFFFFFFFFFFFFu, 0x3F800000u},
-            {"0.99999999999999994448884876874217297881841659545898437501", 0x3FF0000000000000u, 0x3F800000u},
-            {"9.99999999999999944488848768742172978818416595458984375000000000000000000001e-1", 0x3FF0000000000000u, 0x3F800000u},
-            {"-0.99999999999999994", 0xBFEFFFFFFFFFFFFFu, 0xBF800000u},
-            {"9.9999999999999995e-1", 0x3FF0000000000000u, 0x3F800000u},
-            {"9.999999999999999444e-1", 0x3FEFFFFFFFFFFFFFu, 0x3F800000u},
-            {"9999999999999999445e-19", 0x3FF0000000000000u, 0x3F800000u},
-            {"99999999999999994448e-20", 0x3FEFFFFFFFFFFFFFu, 0x3F800000u},
-            {"-0.99999999999999994449", 0xBFF0000000000000u, 0xBF800000u},
-            {"0.999999999999999944488", 0x3FEFFFFFFFFFFFFFu, 0x3F800000u},
-            {"-9.99999999999999944489e-1", 0xBFF0000000000000u, 0xBF800000u},
-            {"9.99999999999999944488848768742e-1", 0x3FEFFFFFFFFFFFFFu, 0x3F800000u},
-            {"999999999999999944488848768743e-30", 0x3FF0000000000000u, 0x3F800000u},
-            {"-9.007199254740993e15", 0xC340000000000000u, 0xDA000000u},
-            {"9007199254740994e0", 0x4340000000000001u, 0x5A000000u},
-            {"9007199254740992", 0x4340000000000000u, 0x5A000000u},
-            {"9.00719925474099301e15", 0x4340000000000001u, 0x5A000000u},
-            {"9007199254740993000000000000000000001e-21", 0x4340000000000001u, 0x5A000000u},
-            {"-9007199254740993.000000000000000000000000000000", 0xC340000000000000u, 0xDA000000u},
-            {"90071992547409915e-1", 0x4340000000000000u, 0x5A000000u},
-            {"-9007199254740991.6", 0xC340000000000000u, 0xDA000000u},
-            {"9.0071992547409914e15", 0x433FFFFFFFFFFFFFu, 0x5A000000u},
-            {"-9007199254740991501e-3", 0xC340000000000000u, 0xDA000000u},
-            {"9007199254740991.5000000000000000000001", 0x4340000000000000u, 0x5A000000u},
-            {"9.0071992547409915000000000000000000000000000000e15", 0x4340000000000000u, 0x5A000000u},
-            {"0.100000000000000012490009027033011079765856266021728515625", 0x3FB999999999999Au, 0x3DCCCCCDu},
-            {"1.00000000000000012490009027033011079765856266021728515626e-1", 0x3FB999999999999Bu, 0x3DCCCCCDu},
-            {"100000000000000012490009027033011079765856266021728515624e-57", 0x3FB999999999999Au, 0x3DCCCCCDu},
-            {"0.10000000000000001249000902703301107976585626602172851562501", 0x3FB999999999999Bu, 0x3DCCCCCDu},
-            {"0.10000000000000001", 0x3FB999999999999Au, 0x3DCCCCCDu},
-            {"1.0000000000000002e-1", 0x3FB999999999999Bu, 0x3DCCCCCDu},
-            {"-1.000000000000000124e-1", 0xBFB999999999999Au, 0xBDCCCCCDu},
-            {"1000000000000000125e-19", 0x3FB999999999999Bu, 0x3DCCCCCDu},
-            {"-10000000000000001249e-20", 0xBFB999999999999Au, 0xBDCCCCCDu},
-            {"0.1000000000000000125", 0x3FB999999999999Bu, 0x3DCCCCCDu},
-            {"0.10000000000000001249", 0x3FB999999999999Au, 0x3DCCCCCDu},
-            {"1.00000000000000012491e-1", 0x3FB999999999999Bu, 0x3DCCCCCDu},
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-            {"0.99999997019767761231", 0x3FEFFFFFF0000000u, 0x3F800000u},
-            {"-0.999999970197677612304", 0xBFEFFFFFF0000000u, 0xBF7FFFFFu},
-            {"9.99999970197677612305e-1", 0x3FEFFFFFF0000000u, 0x3F800000u},
-            {"-1.6777217e7", 0xC170000010000000u, 0xCB800000u},
-            {"16777218e0", 0x4170000020000000u, 0x4B800001u},
-            {"16777216", 0x4170000000000000u, 0x4B800000u},
-            {"-1.677721701e7", 0xC17000001028F5C3u, 0xCB800001u},
-            {"-16777217000000000000000000001e-21", 0xC170000010000000u, 0xCB800001u},
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-            {"16777215.6", 0x416FFFFFF3333333u, 0x4B800000u},
-            {"1.67772154e7", 0x416FFFFFECCCCCCDu, 0x4B7FFFFFu},
-            {"16777215501e-3", 0x416FFFFFF0083127u, 0x4B800000u},
-            {"-16777215.5000000000000000000001", 0xC16FFFFFF0000000u, 0xCB800000u},
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-            {"0.1000000052154064178466796875", 0x3FB99999B0000000u, 0x3DCCCCCEu},
-            {"1.000000052154064178466796876e-1", 0x3FB99999B0000000u, 0x3DCCCCCEu},
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-            {"0.10000000521540641785", 0x3FB99999B0000000u, 0x3DCCCCCEu},
-            {"0.100000005215406417846", 0x3FB99999B0000000u, 0x3DCCCCCDu},
-            {"1.00000005215406417847e-1", 0x3FB99999B0000000u, 0x3DCCCCCEu},
-            {"5.429001220703125e3", 0x40B5350050000000u, 0x45A9A802u},
-            {"-5429001220703126e-12", 0xC0B5350050000001u, 0xC5A9A803u},
-            {"-5429.001220703124", 0xC0B535004FFFFFFFu, 0xC5A9A802u},
-            {"5.42900122070312501e3", 0x40B5350050000000u, 0x45A9A803u},
-            {"5429001220703125000000000000000000001e-33", 0x40B5350050000000u, 0x45A9A803u},
-            {"-5429.001220703125000000000000000000000000000000", 0xC0B5350050000000u, 0xC5A9A802u},
-            {"503719056e0", 0x41BE062490000000u, 0x4DF03124u},
-            {"503719057", 0x41BE062491000000u, 0x4DF03125u},
-            {"5.03719055e8", 0x41BE06248F000000u, 0x4DF03124u},
-            {"50371905601e-2", 0x41BE062490028F5Cu, 0x4DF03125u},
-            {"503719056.000000000000000000001", 0x41BE062490000000u, 0x4DF03125u},
-            {"5.03719056000000000000000000000000000000e8", 0x41BE062490000000u, 0x4DF03124u},
-            {"-92331620", 0xC196037990000000u, 0xCCB01BCCu},
-            {"9.233163e7", 0x41960379B8000000u, 0x4CB01BCEu},
-            {"9233161e1", 0x4196037968000000u, 0x4CB01BCBu},
-            {"92331620.1", 0x4196037990666666u, 0x4CB01BCDu},
-            {"9.233162000000000000000000001e7", 0x4196037990000000u, 0x4CB01BCDu},
-            {"9233162000000000000000000000000000000e-29", 0x4196037990000000u, 0x4CB01BCCu},
-            {"3.002458625e6", 0x4146E82D50000000u, 0x4A37416Au},
-            {"3002458626e-3", 0x4146E82D5020C49Cu, 0x4A37416Bu},
-            {"3002458.624", 0x4146E82D4FDF3B64u, 0x4A37416Au},
-            {"-3.00245862501e6", 0xC146E82D500053E3u, 0xCA37416Bu},
-            {"3002458625000000000000000000001e-24", 0x4146E82D50000000u, 0x4A37416Bu},
-            {"3002458.625000000000000000000000000000000", 0x4146E82D50000000u, 0x4A37416Au},
-            {"-1095485584696182596504479582065262592e1", 0xC7A07BA830000000u, 0xFD03DD42u},
-            {"10954855846961825965044795820652625930", 0x47A07BA830000000u, 0x7D03DD42u},
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-            {"10954855846961825965e18", 0x47A07BA830000000u, 0x7D03DD41u},
-            {"10954855846961825965100000000000000000", 0x47A07BA830000000u, 0x7D03DD42u},
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-            {"-1.09548558469618259650447958207e37", 0xC7A07BA830000000u, 0xFD03DD42u},
-            {"1.6449216019182103706535606608388384863861375606575165875256061553955078126e-21", 0x3B9F125A50000000u, 0x1CF892D3u},
-            {"-16449216019182103706535606608388384863861375606575165875256061553955078124e-94", 0xBB9F125A50000000u, 0x9CF892D2u},
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-            {"-1.6449216019182104e-21", 0xBB9F125A50000000u, 0x9CF892D3u},
-            {"-1.64492160191821037e-21", 0xBB9F125A50000000u, 0x9CF892D2u},
-            {"-1644921601918210371e-39", 0xBB9F125A50000000u, 0x9CF892D3u},
-            {"-16449216019182103706e-40", 0xBB9F125A50000000u, 0x9CF892D2u},
-            {"0.0000000000000000000016449216019182103707", 0x3B9F125A50000000u, 0x1CF892D3u},
-            {"0.00000000000000000000164492160191821037065", 0x3B9F125A50000000u, 0x1CF892D2u},
-            {"1.64492160191821037066e-21", 0x3B9F125A50000000u, 0x1CF892D3u},
-            {"1.64492160191821037065356066083e-21", 0x3B9F125A50000000u, 0x1CF892D2u},
-            {"164492160191821037065356066084e-50", 0x3B9F125A50000000u, 0x1CF892D3u},
-            {"6.565061509609222412109375e-1", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"6565061509609222412109376e-25", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"0.6565061509609222412109374", 0x3FE5021930000000u, 0x3F2810C9u},
-            {"6.56506150960922241210937501e-1", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"6565061509609222412109375000000000000000000001e-46", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"-0.6565061509609222412109375000000000000000000000000000000", 0xBFE5021930000000u, 0xBF2810CAu},
-            {"6.5650615096092224e-1", 0x3FE5021930000000u, 0x3F2810C9u},
-            {"-65650615096092225e-17", 0xBFE5021930000000u, 0xBF2810CAu},
-            {"6565061509609222412e-19", 0x3FE5021930000000u, 0x3F2810C9u},
-            {"0.6565061509609222413", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"0.65650615096092224121", 0x3FE5021930000000u, 0x3F2810C9u},
-            {"6.5650615096092224122e-1", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"-6.5650615096092224121e-1", 0xBFE5021930000000u, 0xBF2810C9u},
-            {"656506150960922241211e-21", 0x3FE5021930000000u, 0x3F2810CAu},
-            {"18014627239033005156980393746124491372029297053813934326171875e-77", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"0.00000000000000018014627239033005156980393746124491372029297053813934326171876", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"-1.8014627239033005156980393746124491372029297053813934326171874e-16", 0xBCA9F63970000000u, 0xA54FB1CBu},
-            {"1801462723903300515698039374612449137202929705381393432617187501e-79", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"18014627239033005e-32", 0x3CA9F63970000000u, 0x254FB1CBu},
-            {"0.00000000000000018014627239033006", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"0.0000000000000001801462723903300515", 0x3CA9F63970000000u, 0x254FB1CBu},
-            {"-1.801462723903300516e-16", 0xBCA9F63970000000u, 0xA54FB1CCu},
-            {"-1.8014627239033005156e-16", 0xBCA9F63970000000u, 0xA54FB1CBu},
-            {"18014627239033005157e-35", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"180146272390330051569e-36", 0x3CA9F63970000000u, 0x254FB1CBu},
-            {"-0.00000000000000018014627239033005157", 0xBCA9F63970000000u, 0xA54FB1CCu},
-            {"0.000000000000000180146272390330051569803937461", 0x3CA9F63970000000u, 0x254FB1CBu},
-            {"1.80146272390330051569803937462e-16", 0x3CA9F63970000000u, 0x254FB1CCu},
-            {"0.05534819327294826507568359375", 0x3FAC569930000000u, 0x3D62B4CAu},
-            {"-5.534819327294826507568359376e-2", 0xBFAC569930000000u, 0xBD62B4CAu},
-            {"5534819327294826507568359374e-29", 0x3FAC569930000000u, 0x3D62B4C9u},
-            {"-0.0553481932729482650756835937501", 0xBFAC569930000000u, 0xBD62B4CAu},
-            {"5.534819327294826507568359375000000000000000000001e-2", 0x3FAC569930000000u, 0x3D62B4CAu},
-            {"5534819327294826507568359375000000000000000000000000000000e-59", 0x3FAC569930000000u, 0x3D62B4CAu},
-            {"0.055348193272948265", 0x3FAC569930000000u, 0x3D62B4C9u},
-            {"5.5348193272948266e-2", 0x3FAC569930000000u, 0x3D62B4CAu},
-            {"5.534819327294826507e-2", 0x3FAC569930000000u, 0x3D62B4C9u},
-            {"5534819327294826508e-20", 0x3FAC569930000000u, 0x3D62B4CAu},
-            {"55348193272948265075e-21", 0x3FAC569930000000u, 0x3D62B4C9u},
-            {"-0.055348193272948265076", 0xBFAC569930000000u, 0xBD62B4CAu},
-            {"0.0553481932729482650756", 0x3FAC569930000000u, 0x3D62B4C9u},
-            {"-5.53481932729482650757e-2", 0xBFAC569930000000u, 0xBD62B4CAu},
-            {"5.179692133247783258005389047985340416e36", 0x478F2C9450000000u, 0x7C7964A2u},
-            {"5179692133247783258005389047985340417e0", 0x478F2C9450000000u, 0x7C7964A3u},
-            {"5179692133247783258005389047985340415", 0x478F2C9450000000u, 0x7C7964A2u},
-            {"-5.17969213324778325800538904798534041601e36", 0xC78F2C9450000000u, 0xFC7964A3u},
-            {"-5179692133247783258005389047985340416000000000000000000001e-21", 0xC78F2C9450000000u, 0xFC7964A3u},
-            {"-5179692133247783258005389047985340416.000000000000000000000000000000", 0xC78F2C9450000000u, 0xFC7964A2u},
-            {"5.1796921332477832e36", 0x478F2C9450000000u, 0x7C7964A2u},
-            {"51796921332477833e20", 0x478F2C9450000000u, 0x7C7964A3u},
-            {"-5179692133247783258e18", 0xC78F2C9450000000u, 0xFC7964A2u},
-            {"5179692133247783259000000000000000000", 0x478F2C9450000000u, 0x7C7964A3u},
-            {"5179692133247783258000000000000000000", 0x478F2C9450000000u, 0x7C7964A2u},
-            {"5.1796921332477832581e36", 0x478F2C9450000000u, 0x7C7964A3u},
-            {"-5.179692133247783258e36", 0xC78F2C9450000000u, 0xFC7964A2u},
-            {"-517969213324778325801e16", 0xC78F2C9450000000u, 0xFC7964A3u},
-            {"517969213324778325800538904798e7", 0x478F2C9450000000u, 0x7C7964A2u},
-            {"5179692133247783258005389047990000000", 0x478F2C9450000000u, 0x7C7964A3u},
-            {
-                "0.22250738585072011360574097967091319759348195463516456480234261097248222220210769455165295239081350"
-                "8791414915891303962110687008643869459464552765720740782062174337998814106326732925355228688137214901"
-                "2981122451451889849057222307285255133155755015914397476397983411801999323962548289017107081850690630"
-                "6666559949382757725720157630626906633326475653000092458883164330377797918696120494973903778297049050"
-                "5108060994073026293712895895000358379996720725430436028407889577179615094551674824347103070260914462"
-                "1572289880258182545180325707018860872113128079512233426288368622321503775666622503982534335974568884"
-                "4239002654981983854879482922068947216898310996983658468140228542433306603398508864458040010349339704"
-                "2756718644338377048603786162277173854562306587467901408672332763671875e-307", 0x0010000000000000u, 0x00000000u
-            },
-            {
-                "2.22507385850720113605740979670913197593481954635164564802342610972482222202107694551652952390813508"
-                "7914149158913039621106870086438694594645527657207407820621743379988141063267329253552286881372149012"
-                "9811224514518898490572223072852551331557550159143974763979834118019993239625482890171070818506906306"
-                "6665599493827577257201576306269066333264756530000924588831643303777979186961204949739037782970490505"
-                "1080609940730262937128958950003583799967207254304360284078895771796150945516748243471030702609144621"
-                "5722898802581825451803257070188608721131280795122334262883686223215037756666225039825343359745688844"
-                "2390026549819838548794829220689472168983109969836584681402285424333066033985088644580400103493397042"
-                "756718644338377048603786162277173854562306587467901408672332763671875000000000000000000001e-308", 0x0010000000000000u, 0x00000000u
-            },
-            {
-                "0.11754942807573642917278829910357665133228589927589904276829631184250030649651730385585324256680905"
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-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "00000000000000000000000000000000000000000000000000000000000000000e-37", 0x380FFFFFE0000000u, 0x00800000u
-            },
-            {
-                "1175494280757364291727882991035766513322858992758990427682963118425003064965173038558532425668090581"
-                "8939208984375000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
-                "00000000000001e-751", 0x380FFFFFE0000000u, 0x00800000u
-            },
-            {"0", 0x0000000000000000u, 0x00000000u},
-            {"-0", 0x8000000000000000u, 0x80000000u},
-            {"0.0", 0x0000000000000000u, 0x00000000u},
-            {"-0.0", 0x8000000000000000u, 0x80000000u},
-            {"0e999999999999999999999", 0x0000000000000000u, 0x00000000u},
-            {"-0.000e-99999", 0x8000000000000000u, 0x80000000u},
-            {"1e-400", 0x0000000000000000u, 0x00000000u},
-            {"-1e-400", 0x8000000000000000u, 0x80000000u},
-            {"1e400", 0x7FF0000000000000u, 0x7F800000u},
-            {"-1e400", 0xFFF0000000000000u, 0xFF800000u},
-            {"1e-50", 0x358DEE7A4AD4B81Fu, 0x00000000u},
-            {"-1e-50", 0xB58DEE7A4AD4B81Fu, 0x80000000u},
-            {"1e39", 0x48078287F49C4A1Du, 0x7F800000u},
-            {"-1e39", 0xC8078287F49C4A1Du, 0xFF800000u},
-            {"1e99999999999999999999999999", 0x7FF0000000000000u, 0x7F800000u},
-            {"1e-99999999999999999999999999", 0x0000000000000000u, 0x00000000u},
-            {"1e0000000000000000000000000000000000000000308", 0x7FE1CCF385EBC8A0u, 0x7F800000u},
-            {"123456789012345678901234567890e-30", 0x3FBF9ADD3746F65Fu, 0x3DFCD6EAu},
-            {"18446744073709551615", 0x43F0000000000000u, 0x5F800000u},
-            {"18446744073709551616", 0x43F0000000000000u, 0x5F800000u},
-            {"-9223372036854775808", 0xC3E0000000000000u, 0xDF000000u},
-            {"-9223372036854775809", 0xC3E0000000000000u, 0xDF000000u},
-        }
-    };
-    return table;
-}
-
-} // namespace float_hard_cases
@@ -59,10 +59,10 @@ TEST_CASE_TEMPLATE_DEFINE("value_in_range_of trait", T, value_in_range_of_test)

    INFO("type := ", type_str);

-    CAPTURE(val_min);
-    CAPTURE(min_in_range);
-    CAPTURE(val_max);
-    CAPTURE(max_in_range);
+    CAPTURE(val_min)
+    CAPTURE(min_in_range)
+    CAPTURE(val_max)
+    CAPTURE(max_in_range)

    if (min_in_range)
    {
@@ -239,7 +239,7 @@ TEST_CASE("controlled bad_alloc")
            // iterative path instead, part-way through its worklist.
            const auto check_deep_copy = [](bool objects)
            {
-                CAPTURE(objects);
+                CAPTURE(objects)

                next_construct_fails = false;

@@ -315,7 +315,7 @@ struct nth_alloc_fails_allocator : std::allocator<T>
 template<class BasicJsonType>
 void check_deep_copy_survives_failing_allocation(bool nest_objects)
 {
-    CAPTURE(nest_objects);
+    CAPTURE(nest_objects)

    fail_at_alloc_call = -1;

@@ -352,7 +352,7 @@ void check_deep_copy_survives_failing_allocation(bool nest_objects)
    // must come out exactly as it went in
    for (std::size_t n = 0; n < total_allocations; ++n)
    {
-        CAPTURE(n);
+        CAPTURE(n)
        alloc_call_count = 0;
        fail_at_alloc_call = static_cast<long>(n);

@@ -18,7 +18,7 @@ DOCTEST_CLANG_SUPPRESS_WARNING("-Wstrict-overflow")
 static int assert_counter;

 /// set failure variable to true instead of calling assert(x)
-#define JSON_ASSERT(x) {if (!(x)) ++assert_counter; }
+#define JSON_ASSERT(x) do { if (!(x)) { ++assert_counter; } } while (false)

 #include <nlohmann/json.hpp>
 using nlohmann::json;
@@ -89,7 +89,7 @@ TEST_CASE("binary writer output sinks")
        // the first iteration
        for (const auto& j : test_values())
        {
-            CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace));
+            CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace))

            std::vector<std::uint8_t> cbor;
            json::to_cbor(j, cbor);
@@ -120,8 +120,8 @@ TEST_CASE("binary writer output sinks")
                    {
                        continue; // not a supported combination
                    }
-                    CAPTURE(use_size);
-                    CAPTURE(use_type);
+                    CAPTURE(use_size)
+                    CAPTURE(use_type)
                    std::vector<std::uint8_t> ubjson;
                    json::to_ubjson(j, ubjson, use_size, use_type);
                    CHECK(json::to_ubjson(j, use_size, use_type) == ubjson);
@@ -141,7 +141,7 @@ TEST_CASE("binary writer output sinks")

        for (const auto& j : bson_values())
        {
-            CAPTURE(j.dump());
+            CAPTURE(j.dump())
            std::vector<std::uint8_t> bson;
            json::to_bson(j, bson);
            CHECK(json::to_bson(j) == bson);
@@ -152,7 +152,7 @@ TEST_CASE("binary writer output sinks")
    {
        for (const auto& j : test_values())
        {
-            CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace));
+            CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace))

            const std::vector<std::uint8_t> expected = json::to_cbor(j);
            std::vector<char> as_char;
@@ -177,7 +177,7 @@ TEST_CASE("binary_reserve_hint never over-reserves")
 {
    for (const auto& j : test_values())
    {
-        CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace));
+        CAPTURE(j.dump(-1, ' ', false, json::error_handler_t::replace))

        const std::size_t hint = nlohmann::detail::binary_reserve_hint(j);

@@ -194,7 +194,7 @@ TEST_CASE("binary_reserve_hint never over-reserves")

    for (const auto& j : bson_values())
    {
-        CAPTURE(j.dump());
+        CAPTURE(j.dump())
        CHECK(nlohmann::detail::binary_reserve_hint(j) <= json::to_bson(j).size());
    }

@@ -146,10 +146,10 @@ TEST_CASE_TEMPLATE_DEFINE("value_in_range_of trait", T, value_in_range_of_test)

    INFO("type := ", type_str);

-    CAPTURE(val_min);
-    CAPTURE(min_in_range);
-    CAPTURE(val_max);
-    CAPTURE(max_in_range);
+    CAPTURE(val_min)
+    CAPTURE(min_in_range)
+    CAPTURE(val_max)
+    CAPTURE(max_in_range)

    if (min_in_range)
    {
@@ -2641,7 +2641,7 @@ TEST_CASE("BJData")
                        {"uint8", "int8", "uint16", "int16", "uint32", "int32", "uint64", "int64", "char"
                        })
                {
-                    CAPTURE(type);
+                    CAPTURE(type)
                    const std::string text = std::string(R"({"_ArrayType_":")") + type +
                                             R"(","_ArraySize_":[2,3],"_ArrayData_":[1,2,3,4,5,6]})";
                    const auto from_text = json::to_bjdata(json::parse(text));
@@ -2949,7 +2949,7 @@ TEST_CASE("BJData")
                            R"({"_ArrayType_":"int16","_ArraySize_":[0,2],"_ArrayData_":[]})"
                        })
                {
-                    CAPTURE(text);
+                    CAPTURE(text)
                    const json j = json::parse(text);
                    for (const bool use_size :
                            {
@@ -2983,7 +2983,7 @@ TEST_CASE("BJData")
                            R"({"_ArrayType_":"int16","_ArraySize_":[],"_ArrayData_":null})"
                        })
                {
-                    CAPTURE(text);
+                    CAPTURE(text)
                    const json j = json::parse(text);
                    const auto out = json::to_bjdata(j);
                    CHECK(out.at(0) == '{');
@@ -4317,7 +4317,7 @@ TEST_CASE("BJData and UBJSON can be written to a string")

    for (const auto& j : values)
    {
-        CAPTURE(j.dump());
+        CAPTURE(j.dump())
        for (const bool use_size :
                {
                    false, true
@@ -4332,8 +4332,8 @@ TEST_CASE("BJData and UBJSON can be written to a string")
                {
                    continue;
                }
-                CAPTURE(use_size);
-                CAPTURE(use_type);
+                CAPTURE(use_size)
+                CAPTURE(use_type)

                const auto bjdata = json::to_bjdata(j, use_size, use_type);
                std::string bjdata_string;
@@ -1788,7 +1788,7 @@ TEST_CASE("BSON: deeply nested values")
        json value = "leaf";
        for (std::size_t depth = 0; depth <= 300; ++depth)
        {
-            CAPTURE(depth);
+            CAPTURE(depth)
            const json document = {{"value", value}, {"n", depth}};
            CHECK(json::from_bson(json::to_bson(document)) == document);

@@ -1836,7 +1836,7 @@ value = depth % 2 == 0 ? json{{"a", std::move(value)}, {"b", {1, "x"}}} :
                    false, true
                })
        {
-            CAPTURE(objects);
+            CAPTURE(objects)
            std::string text = "{\"a\":";
            for (std::size_t i = 0; i < depth; ++i)
            {
@@ -17,7 +17,7 @@ TEST_CASE("capacity")
    {
        SECTION("boolean")
        {
-            json j = true; // NOLINT(misc-const-correctness)
+            json j = true;
            const json j_const = true;

            SECTION("result of empty")
@@ -35,7 +35,7 @@ TEST_CASE("capacity")

        SECTION("string")
        {
-            json j = "hello world"; // NOLINT(misc-const-correctness)
+            json j = "hello world";
            const json j_const = "hello world";

            SECTION("result of empty")
@@ -55,7 +55,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty array")
            {
-                json j = json::array(); // NOLINT(misc-const-correctness)
+                json j = json::array();
                const json j_const = json::array();

                SECTION("result of empty")
@@ -73,7 +73,7 @@ TEST_CASE("capacity")

            SECTION("filled array")
            {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = {1, 2, 3};
                const json j_const = {1, 2, 3};

                SECTION("result of empty")
@@ -94,7 +94,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty object")
            {
-                json j = json::object(); // NOLINT(misc-const-correctness)
+                json j = json::object();
                const json j_const = json::object();

                SECTION("result of empty")
@@ -112,7 +112,7 @@ TEST_CASE("capacity")

            SECTION("filled object")
            {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}};
                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};

                SECTION("result of empty")
@@ -131,7 +131,7 @@ TEST_CASE("capacity")

        SECTION("number (integer)")
        {
-            json j = -23; // NOLINT(misc-const-correctness)
+            json j = -23;
            const json j_const = -23;

            SECTION("result of empty")
@@ -149,7 +149,7 @@ TEST_CASE("capacity")

        SECTION("number (unsigned)")
        {
-            json j = 23u; // NOLINT(misc-const-correctness)
+            json j = 23u;
            const json j_const = 23u;

            SECTION("result of empty")
@@ -167,7 +167,7 @@ TEST_CASE("capacity")

        SECTION("number (float)")
        {
-            json j = 23.42; // NOLINT(misc-const-correctness)
+            json j = 23.42;
            const json j_const = 23.42;

            SECTION("result of empty")
@@ -185,7 +185,7 @@ TEST_CASE("capacity")

        SECTION("null")
        {
-            json j = nullptr; // NOLINT(misc-const-correctness)
+            json j = nullptr;
            const json j_const = nullptr;

            SECTION("result of empty")
@@ -206,7 +206,7 @@ TEST_CASE("capacity")
    {
        SECTION("boolean")
        {
-            json j = true; // NOLINT(misc-const-correctness)
+            json j = true;
            const json j_const = true;

            SECTION("result of size")
@@ -226,7 +226,7 @@ TEST_CASE("capacity")

        SECTION("string")
        {
-            json j = "hello world"; // NOLINT(misc-const-correctness)
+            json j = "hello world";
            const json j_const = "hello world";

            SECTION("result of size")
@@ -248,7 +248,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty array")
            {
-                json j = json::array(); // NOLINT(misc-const-correctness)
+                json j = json::array();
                const json j_const = json::array();

                SECTION("result of size")
@@ -268,7 +268,7 @@ TEST_CASE("capacity")

            SECTION("filled array")
            {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = {1, 2, 3};
                const json j_const = {1, 2, 3};

                SECTION("result of size")
@@ -291,7 +291,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty object")
            {
-                json j = json::object(); // NOLINT(misc-const-correctness)
+                json j = json::object();
                const json j_const = json::object();

                SECTION("result of size")
@@ -311,7 +311,7 @@ TEST_CASE("capacity")

            SECTION("filled object")
            {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}};
                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};

                SECTION("result of size")
@@ -332,7 +332,7 @@ TEST_CASE("capacity")

        SECTION("number (integer)")
        {
-            json j = -23; // NOLINT(misc-const-correctness)
+            json j = -23;
            const json j_const = -23;

            SECTION("result of size")
@@ -352,7 +352,7 @@ TEST_CASE("capacity")

        SECTION("number (unsigned)")
        {
-            json j = 23u; // NOLINT(misc-const-correctness)
+            json j = 23u;
            const json j_const = 23u;

            SECTION("result of size")
@@ -372,7 +372,7 @@ TEST_CASE("capacity")

        SECTION("number (float)")
        {
-            json j = 23.42; // NOLINT(misc-const-correctness)
+            json j = 23.42;
            const json j_const = 23.42;

            SECTION("result of size")
@@ -392,7 +392,7 @@ TEST_CASE("capacity")

        SECTION("null")
        {
-            json j = nullptr; // NOLINT(misc-const-correctness)
+            json j = nullptr;
            const json j_const = nullptr;

            SECTION("result of size")
@@ -415,7 +415,7 @@ TEST_CASE("capacity")
    {
        SECTION("boolean")
        {
-            json j = true; // NOLINT(misc-const-correctness)
+            json j = true;
            const json j_const = true;

            SECTION("result of max_size")
@@ -427,7 +427,7 @@ TEST_CASE("capacity")

        SECTION("string")
        {
-            json j = "hello world"; // NOLINT(misc-const-correctness)
+            json j = "hello world";
            const json j_const = "hello world";

            SECTION("result of max_size")
@@ -441,7 +441,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty array")
            {
-                json j = json::array(); // NOLINT(misc-const-correctness)
+                json j = json::array();
                const json j_const = json::array();

                SECTION("result of max_size")
@@ -453,7 +453,7 @@ TEST_CASE("capacity")

            SECTION("filled array")
            {
-                json j = {1, 2, 3}; // NOLINT(misc-const-correctness)
+                json j = {1, 2, 3};
                const json j_const = {1, 2, 3};

                SECTION("result of max_size")
@@ -468,7 +468,7 @@ TEST_CASE("capacity")
        {
            SECTION("empty object")
            {
-                json j = json::object(); // NOLINT(misc-const-correctness)
+                json j = json::object();
                const json j_const = json::object();

                SECTION("result of max_size")
@@ -480,7 +480,7 @@ TEST_CASE("capacity")

            SECTION("filled object")
            {
-                json j = {{"one", 1}, {"two", 2}, {"three", 3}}; // NOLINT(misc-const-correctness)
+                json j = {{"one", 1}, {"two", 2}, {"three", 3}};
                const json j_const = {{"one", 1}, {"two", 2}, {"three", 3}};

                SECTION("result of max_size")
@@ -493,7 +493,7 @@ TEST_CASE("capacity")

        SECTION("number (integer)")
        {
-            json j = -23; // NOLINT(misc-const-correctness)
+            json j = -23;
            const json j_const = -23;

            SECTION("result of max_size")
@@ -505,7 +505,7 @@ TEST_CASE("capacity")

        SECTION("number (unsigned)")
        {
-            json j = 23u; // NOLINT(misc-const-correctness)
+            json j = 23u;
            const json j_const = 23u;

            SECTION("result of max_size")
@@ -517,7 +517,7 @@ TEST_CASE("capacity")

        SECTION("number (float)")
        {
-            json j = 23.42; // NOLINT(misc-const-correctness)
+            json j = 23.42;
            const json j_const = 23.42;

            SECTION("result of max_size")
@@ -529,7 +529,7 @@ TEST_CASE("capacity")

        SECTION("null")
        {
-            json j = nullptr; // NOLINT(misc-const-correctness)
+            json j = nullptr;
            const json j_const = nullptr;

            SECTION("result of max_size")
@@ -2931,7 +2931,7 @@ TEST_CASE("Tagged values")
        0xD5, 0xD6, 0xD7
    })
        {
-            CAPTURE(b);
+            CAPTURE(b)

            // add tag to value
            auto v_tagged = v;
@@ -3271,7 +3271,7 @@ TEST_CASE("CBOR large strings and binaries (chunked reader)")
                std::size_t{4097}, std::size_t{8192}, std::size_t{100000}
            })
    {
-        CAPTURE(len);
+        CAPTURE(len)

        // text string
        const json j_string = std::string(len, 'x');
@@ -13,19 +13,15 @@
 using nlohmann::json;

 #include <array> // array
+#include <cfloat> // FLT_EVAL_METHOD
 #include <cstdint> // uint32_t, uint64_t
-#include <cstdio> // snprintf
 #include <cstdlib> // strtod
 #include <cstring> // memcpy
-#include <map> // map
-#include <random> // mt19937
 #include <sstream> // stringstream
 #include <string> // string
 #include <utility> // pair
 #include <vector> // vector

-#include "float_hard_cases.hpp"
-
 namespace
 {
 // shortcut to scan a string literal
@@ -261,7 +257,7 @@ TEST_CASE("lexer number fast path")
            "123456789012345678901234567890",  // huge -> float
            "0.30000000000000004", "2.2250738585072014e-308", "1e308",
            // high-precision / wide-exponent values that exercise the
-            // Eisel-Lemire path beyond the Clinger subset
+            // std::from_chars (Eisel-Lemire) path beyond the Clinger subset
            "1.7976931348623157e308", "1.2345678901234567e-250",
            "9007199254740993", "5e-324", "1e-320"
        };
@@ -276,25 +272,27 @@ TEST_CASE("lexer number fast path")
            std::stringstream ss(doc);
            const json b = json::parse(ss);

-            CAPTURE(n);
+            CAPTURE(n)
            CHECK(a == b);
            CHECK(a.dump() == b.dump());
            CHECK(a[0].type() == b[0].type());
        }
    }

-    SECTION("significant digits around Clinger's fast path")
+    SECTION("significant-digit gate for the Clinger fast path")
    {
-        // Clinger's fast path needs a significand of at most 2^53, which
-        // tokens with 17 or more significant digits exceed. The conversion
-        // splits the token at the positions the scanners recorded, so leading
-        // zeros must not count as digits - "0.1234567890123456" has 16
-        // significant digits, not 17 - and both scanners must agree.
+        // Clinger's fast path needs a significand below 2^53, so it cannot
+        // succeed once the mantissa has 17 or more significant digits (the
+        // significand would be at least 10^16). The lexer skips the attempt
+        // there. That is only allowed to save work: every value must still come
+        // out bit-exactly, and both scanners must agree. In particular the gate
+        // must not fire for tokens whose leading zeros merely look like extra
+        // digits - "0.1234567890123456" has 16 significant digits, not 17.
        const std::vector<std::string> numbers =
        {
            "1234567890123456",                  // 16 significant digits
-            "12345678901234567",                 // 17
-            "123456789012345678",                // 18
+            "12345678901234567",                 // 17 -> attempt skipped
+            "123456789012345678",                // 18 -> attempt skipped
            "0.1234567890123456",                // 16: the leading "0" is not significant
            "0.12345678901234567",               // 17
            "0.00000000000000001",               // 1, in a long token
@@ -312,7 +310,7 @@ TEST_CASE("lexer number fast path")

        for (const auto& n : numbers)
        {
-            CAPTURE(n);
+            CAPTURE(n)
            const std::string doc = "[" + n + "]";

            const json a = json::parse(doc);   // contiguous fast path
@@ -349,7 +347,7 @@ TEST_CASE("lexer number fast path")
                {"-", "1.", "1e", "1e+", "1.2e", "01", "-01", "1..2", "1.2.3"
                })
        {
-            CAPTURE(bad);
+            CAPTURE(bad)
            // the contiguous fast path must decline and let the byte path report
            const std::string doc = std::string("[") + bad + "]";
            CHECK_FALSE(json::accept(doc));
@@ -417,7 +415,7 @@ TEST_CASE("lexer number fast path")

        // 7 + 49 + 343 + 2401 tokens
        CHECK(tokens.size() == 2401);
-        CAPTURE(mismatches);
+        CAPTURE(mismatches)
        CHECK(mismatches.empty());
    }

@@ -461,7 +459,7 @@ TEST_CASE("lexer number fast path")
                 "[1 \n2]", "[\n1\n2]", "1\n2", "[01\r\n]", "[1e\n]", "[-\n]"
                })
        {
-            CAPTURE(bad);
+            CAPTURE(bad)
            const std::string doc = bad;
            const std::string contiguous_what = contiguous_error(doc);

@@ -578,7 +576,7 @@ TEST_CASE("lexer string fast path")

        // 13 + 169 + 2197 tokens, each at two offsets
        CHECK(tokens.size() == 2197);
-        CAPTURE(mismatches);
+        CAPTURE(mismatches)
        CHECK(mismatches.empty());
    }

@@ -606,7 +604,7 @@ TEST_CASE("lexer string fast path")
                }
            }
        }
-        CAPTURE(mismatches);
+        CAPTURE(mismatches)
        CHECK(mismatches.empty());
    }
 #endif
@@ -651,10 +649,10 @@ TEST_CASE("lexer string fast path")

        for (const auto& test_case : cases)
        {
-            CAPTURE(test_case.description);
+            CAPTURE(test_case.description)
            for (const std::size_t offset : offsets)
            {
-                CAPTURE(offset);
+                CAPTURE(offset)
                const std::string doc = "[\"" + std::string(offset, 'a') + test_case.sequence + "\"]";
                CHECK(json::accept(doc) == test_case.valid);
 #if !defined(JSON_NOEXCEPTION)
@@ -665,323 +663,46 @@ TEST_CASE("lexer string fast path")
    }
 }

-TEST_CASE("lexer escape fast path")
+TEST_CASE("parse_float_fast declines what it cannot convert exactly")
 {
-    // json::accept() never throws, so this section stays covered without
-    // exceptions; it pins which of the cases below are valid/invalid and
-    // checks the contiguous and streaming paths agree on that classification.
-    SECTION("accept() parity")
+    // The lexer only hands well-formed numbers to parse_float_fast, so the
+    // malformed ones below can only be passed to it directly. Declining is
+    // always safe: the caller then falls back to a slower, exact conversion.
+    const auto fast = [](const std::string & s, double & out)
    {
-        const std::vector<std::pair<std::string, bool>> cases =
-        {
-            {"\\u0041", true}, {"\\u00e4", true}, {"\\u00E4", true},
-            {"\\uD83D\\uDE00", true},
-            {"\\u12", false}, {"\\u12G4", false}, {"\\uXYZW", false},
-            {"\\uD800", false}, {"\\uD800A", false}, {"\\uD800\\u0041", false},
-            {"\\uDC00", false}, {"\\u", false}
-        };
-
-        for (const auto& c : cases)
-        {
-            for (const std::size_t offset :
-                    {
-                        std::size_t{0}, std::size_t{9}
-                    })
-            {
-                const std::string doc = "[\"" + std::string(offset, 'a') + c.first + "\"]";
-                CAPTURE(doc);
-                CHECK(json::accept(doc) == c.second);
-                std::stringstream ss(doc);
-                CHECK(json::accept(ss) == c.second);
-            }
-        }
-    }
-
-#if !defined(JSON_NOEXCEPTION)
-    // the full outcome of parsing @a doc: the parsed value, or the exact
-    // error message, so a mismatch in either is caught
-    const auto outcome = [](const std::string & doc, bool streaming) -> std::string
-    {
-        try
-        {
-            if (streaming)
-            {
-                std::stringstream ss(doc);
-                const json j = json::parse(ss);
-                return j.dump();
-            }
-            const json j = json::parse(doc);
-            return j.dump();
-        }
-        catch (const json::exception& e)
-        {
-            return {e.what()};
-        }
+        return nlohmann::detail::parse_float_fast(s.data(), s.data() + s.size(), out);
    };
+    double out = 0;

-    SECTION("contiguous vs streaming parity")
-    {
-        const std::vector<std::string> escapes =
-        {
-            "\\u0041",             // "A"
-            "\\u00e4",             // "ä" (lowercase hex)
-            "\\u00E4",             // "ä" (uppercase hex)
-            "\\uD83D\\uDE00",      // valid surrogate pair (an emoji)
-            "\\u12",               // truncated: only 2 hex digits before the closing quote
-            "\\u12G4",             // invalid hex digit at the 3rd position
-            "\\uXYZW",             // all 4 bytes invalid
-            "\\uD800",             // lone high surrogate, string ends right after
-            "\\uD800A",            // high surrogate not followed by another \u escape
-            "\\uD800\\u0041",      // high surrogate followed by \u, but not a low surrogate
-            "\\uDC00",             // lone low surrogate
-            "\\u",                 // '\u' with nothing after (closing quote right away)
-        };
-
-        // once at the start of the string and once past the first 8-byte SWAR
-        // word of the outer string_bulk_run, so the escape is reached both
-        // right after the opening quote and mid-run
-        for (const auto& escape : escapes)
-        {
-            for (const std::size_t offset :
-                    {
-                        std::size_t{0}, std::size_t{9}
-                    })
-            {
-                const std::string doc = "[\"" + std::string(offset, 'a') + escape + "\"]";
-                CAPTURE(doc);
-                CHECK(outcome(doc, false) == outcome(doc, true));
-            }
-
-            // the escape is the last thing before end of input: no closing
-            // quote at all
-            const std::string truncated_doc = "[\"" + escape;
-            CAPTURE(truncated_doc);
-            CHECK(outcome(truncated_doc, false) == outcome(truncated_doc, true));
-        }
-    }
-
-    SECTION("truncated \\u escape at every distance from the end of input")
-    {
-        // ia.bulk_remaining() must correctly report fewer than 4 bytes for
-        // every possible count of trailing hex-looking bytes (0, 1, 2, or 3)
-        // before end of input, so the fast path declines and the byte path
-        // alone reports the "must be followed by 4 hex digits" error, at the
-        // same position, in every case
-        for (const std::string& tail :
-                {
-                    std::string{}, std::string("1"), std::string("12"), std::string("123")
-                })
-        {
-            const std::string doc = "[\"\\u" + tail;
-            CAPTURE(doc);
-            CHECK(outcome(doc, false) == outcome(doc, true));
-            CHECK(outcome(doc, false).find("must be followed by 4 hex digits") != std::string::npos);
-        }
-    }
-
-    SECTION("invalid hex digit at every position of the 4")
-    {
-        // the fast path must decline for *any* invalid byte among the 4, not
-        // just the first, and the byte path must then stop at exactly that
-        // position - same as it always has
-        for (std::size_t bad_pos = 0; bad_pos < 4; ++bad_pos)
-        {
-            std::string digits = "1234";
-            digits[bad_pos] = 'g'; // not a hex digit
-            const std::string doc = "[\"\\u" + digits + "\"]";
-            CAPTURE(doc);
-            CHECK(outcome(doc, false) == outcome(doc, true));
-            CHECK(outcome(doc, false).find("must be followed by 4 hex digits") != std::string::npos);
-        }
-    }
-
-    SECTION("random escapes")
-    {
-        // A seeded PRNG builds the 4 bytes following `\u` from a mix of hex
-        // digits and non-hex bytes, at varying distances from the start of
-        // the string, to compare the two scanners on many more shapes than
-        // are practical to enumerate by hand.
-        std::mt19937 gen(7654321); // NOLINT(cert-msc32-c,cert-msc51-cpp)
-        const std::string hex_alphabet = "0123456789AaBbCcDdEeFf";
-        std::uniform_int_distribution<std::size_t> pick_hex(0, hex_alphabet.size() - 1);
-        std::uniform_int_distribution<int> pick_byte(1, 255); // never NUL
-        std::uniform_int_distribution<int> pick_is_hex(0, 4); // 4-in-5 chance of a hex digit
-        std::uniform_int_distribution<std::size_t> pick_offset(0, 12);
-
-        std::vector<std::string> mismatches;
-        for (int iter = 0; iter < 3000; ++iter)
-        {
-            std::string digits;
-            for (int i = 0; i < 4; ++i)
-            {
-                if (pick_is_hex(gen) != 0)
-                {
-                    digits += hex_alphabet[pick_hex(gen)];
-                }
-                else
-                {
-                    char c = static_cast<char>(pick_byte(gen));
-                    if (c == '"' || c == '\\')
-                    {
-                        // keep the string well-formed apart from the escape
-                        // itself, so any mismatch is attributable to the \u
-                        // handling and not to an unrelated quote/escape
-                        c = 'z';
-                    }
-                    digits += c;
-                }
-            }
-            const std::string doc = "[\"" + std::string(pick_offset(gen), 'a') + "\\u" + digits + "\"]";
-            if (outcome(doc, false) != outcome(doc, true))
-            {
-                mismatches.push_back(doc);
-            }
-        }
-        CAPTURE(mismatches);
-        CHECK(mismatches.empty());
-    }
+#if defined(FLT_EVAL_METHOD) && FLT_EVAL_METHOD != 0
+    // without true double precision, the fast path declines everything
+    CHECK_FALSE(fast("1.5", out));
+#else
+    CHECK(fast("1.5", out));
+    CHECK(out == 1.5);
+    CHECK(fast("+2.5e1", out));
+    CHECK(out == 25.0);
+    CHECK(fast("-25E-1", out));
+    CHECK(out == -2.5);
+    CHECK(fast("1e", out));
+    CHECK(out == 1.0);
 #endif
-}

-namespace
-{
-// the index of the decimal point (or npos) and of the end of the mantissa of a
-// number token, which the lexer records while scanning it
-std::pair<std::size_t, std::size_t> float_token_layout(const std::string& s)
-{
-    std::size_t dot = std::string::npos;
-    std::size_t mantissa_end = s.size();
-    for (std::size_t i = 0; i < s.size(); ++i)
-    {
-        if (s[i] == '.')
-        {
-            dot = i;
-        }
-        else if (s[i] == 'e' || s[i] == 'E')
-        {
-            mantissa_end = i;
-            break;
-        }
-    }
-    return {dot, mantissa_end};
-}
+    // not a number
+    CHECK_FALSE(fast("", out));
+    CHECK_FALSE(fast("-", out));
+    CHECK_FALSE(fast(".", out));
+    CHECK_FALSE(fast("1.2.3", out));
+    CHECK_FALSE(fast("1x", out));
+    CHECK_FALSE(fast("1e+", out));
+    CHECK_FALSE(fast("1e1x", out));

-template<typename FloatType>
-FloatType parse_native(const std::string& s)
-{
-    const auto layout = float_token_layout(s);
-    return nlohmann::detail::parse_float_native<FloatType>(s.data(), s.data() + s.size(), layout.first, layout.second);
-}
-
-std::uint64_t bits_of(double d)
-{
-    std::uint64_t b = 0;
-    std::memcpy(&b, &d, sizeof(b));
-    return b;
-}
-
-std::uint32_t bits_of(float f)
-{
-    std::uint32_t b = 0;
-    std::memcpy(&b, &f, sizeof(b));
-    return b;
-}
-
-std::uint64_t native_bits64(const std::string& s)
-{
-    return bits_of(parse_native<double>(s));
-}
-
-std::uint32_t native_bits32(const std::string& s)
-{
-    return bits_of(parse_native<float>(s));
-}
-} // namespace
-
-TEST_CASE("parse_float_native rounds correctly")
-{
-    SECTION("double")
-    {
-        CHECK(native_bits64("1.5") == 0x3FF8000000000000u);
-        CHECK(native_bits64("0.1") == 0x3FB999999999999Au);
-        CHECK(native_bits64("-0.0") == 0x8000000000000000u);
-        CHECK(native_bits64("0e999999999999999999999") == 0u);
-        // 2^53 + 1 is exactly between two doubles: ties to even, unless more digits follow
-        CHECK(native_bits64("9007199254740993") == 0x4340000000000000u);
-        CHECK(native_bits64("9007199254740993.0000000000000000001") == 0x4340000000000001u);
-        CHECK(native_bits64("9007199254740992.9999999999999999999") == 0x4340000000000000u);
-        // 1 + 2^-53 exactly (a tie), and one unit in the 55th digit around it
-        CHECK(native_bits64("1.00000000000000011102230246251565404236316680908203125") == 0x3FF0000000000000u);
-        CHECK(native_bits64("1.00000000000000011102230246251565404236316680908203126") == 0x3FF0000000000001u);
-        CHECK(native_bits64("1.00000000000000011102230246251565404236316680908203124") == 0x3FF0000000000000u);
-        // subnormal and overflow boundaries
-        CHECK(native_bits64("2.4703282292062327e-324") == 0u);
-        CHECK(native_bits64("2.4703282292062328e-324") == 1u);
-        CHECK(native_bits64("2.2250738585072011e-308") == 0x000FFFFFFFFFFFFFu);
-        CHECK(native_bits64("2.2250738585072012e-308") == 0x0010000000000000u);
-        CHECK(native_bits64("1.7976931348623157e308") == 0x7FEFFFFFFFFFFFFFu);
-        CHECK(native_bits64("1.7976931348623159e308") == 0x7FF0000000000000u);
-        CHECK(native_bits64("-1e400") == 0xFFF0000000000000u);
-        CHECK(native_bits64("-1e-400") == 0x8000000000000000u);
-        // exponents and zeros far beyond the range cancel out
-        CHECK(native_bits64("0." + std::string(1000, '0') + "1e1001") == 0x3FF0000000000000u);
-        CHECK(native_bits64("1" + std::string(1000, '0') + "e-1000") == 0x3FF0000000000000u);
-        CHECK(native_bits64("1e-99999999999999999999999") == 0u);
-        CHECK(native_bits64("1E+99999999999999999999999") == 0x7FF0000000000000u);
-        // more digits than any midpoint has (769): only whether a nonzero digit follows matters
-        const std::string tie = "1.00000000000000011102230246251565404236316680908203125";
-        CHECK(native_bits64(tie + std::string(800, '0')) == 0x3FF0000000000000u);
-        CHECK(native_bits64(tie + std::string(800, '0') + "1") == 0x3FF0000000000001u);
-    }
-
-    SECTION("float")
-    {
-        CHECK(native_bits32("1.5") == 0x3FC00000u);
-        CHECK(native_bits32("0.1") == 0x3DCCCCCDu);
-        CHECK(native_bits32("-0.0") == 0x80000000u);
-        // 2^24 + 1 is exactly between two floats
-        CHECK(native_bits32("16777217") == 0x4B800000u);
-        CHECK(native_bits32("16777217.000000000000000000001") == 0x4B800001u);
-        CHECK(native_bits32("16777218.999999999999999999999") == 0x4B800001u);
-        CHECK(native_bits32("16777219") == 0x4B800002u);
-        // subnormal and overflow boundaries
-        CHECK(native_bits32("3.4028235677973366e38") == 0x7F7FFFFFu);
-        CHECK(native_bits32("3.4028235677973367e38") == 0x7F800000u);
-        CHECK(native_bits32("7.006492321624085e-46") == 0u);
-        CHECK(native_bits32("7.006492321624086e-46") == 1u);
-        CHECK(native_bits32("1.1754942e-38") == 0x007FFFFFu);
-        CHECK(native_bits32("-1.17549435e-38") == 0x80800000u);
-        CHECK(native_bits32("1e39") == 0x7F800000u);
-        CHECK(native_bits32("-1e-50") == 0x80000000u);
-        // not rounded through double: its double would round to another float
-        CHECK(native_bits32("1.00000005960464477539062500000000001") == 0x3F800001u);
-        CHECK(native_bits32("9007199254740993") == 0x5A000000u);
-    }
-
-    SECTION("the conversion shared with other parsers")
-    {
-        // convert_float() gives the lexer's results, for every type
-        const std::vector<std::string> tokens =
-        {
-            "0", "-0.0", "1.5", "0.1", "1e-400", "-2.5E+3", "123456789012345678901234567890",
-            "9007199254740993.0000000000000000001", "4.9406564584124654e-324"
-        };
-        using float_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, float>;
-        using long_double_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, long double>;
-        for (const auto& t : tokens)
-        {
-            CAPTURE(t);
-            const auto layout = float_token_layout(t);
-            const char* const first = t.data();
-            const char* const last = first + t.size();
-            const auto d = nlohmann::detail::convert_float<double>(first, last, layout.first, layout.second);
-            const auto f = nlohmann::detail::convert_float<float>(first, last, layout.first, layout.second);
-            const auto ld = nlohmann::detail::convert_float<long double>(first, last, layout.first, layout.second);
-            CHECK(bits_of(d) == bits_of(json::parse(t).get<double>()));
-            CHECK(bits_of(f) == bits_of(float_json::parse(t).get<float>()));
-            CHECK(ld == long_double_json::parse(t).get<long double>());
-        }
-    }
+    // numbers that are not represented exactly on the fast path
+    CHECK_FALSE(fast("12345678901234567890", out));
+    CHECK_FALSE(fast("1e10000", out));
+    CHECK_FALSE(fast("9007199254740993", out));
+    CHECK_FALSE(fast("1e23", out));
+    CHECK_FALSE(fast("1e-23", out));
 }

 namespace
@@ -1085,6 +806,40 @@ std::size_t big_bit_length(const big_uint& a)
    }
    return n;
 }
+
+std::uint64_t bits_of(double d)
+{
+    std::uint64_t b = 0;
+    std::memcpy(&b, &d, sizeof(b));
+    return b;
+}
+
+bool eisel_lemire(const std::string& s, double& out)
+{
+    return nlohmann::detail::parse_float_eisel_lemire(s.data(), s.data() + s.size(), out);
+}
+
+// significant digits of a token, without trailing zeros
+std::size_t significant_digits(const std::string& s)
+{
+    std::string digits;
+    for (const char c : s)
+    {
+        if (c == 'e' || c == 'E')
+        {
+            break;
+        }
+        if (c >= '0' && c <= '9' && !(digits.empty() && c == '0'))
+        {
+            digits += c;
+        }
+    }
+    while (!digits.empty() && digits.back() == '0')
+    {
+        digits.pop_back();
+    }
+    return digits.size();
+}
 } // namespace

 TEST_CASE("Eisel-Lemire float conversion")
@@ -1481,34 +1236,27 @@ TEST_CASE("Eisel-Lemire float conversion")

        for (const auto& c : known)
        {
-            CAPTURE(c.first);
-            CHECK(native_bits64(c.first) == c.second);
+            CAPTURE(c.first)
+            double out = 0;
+            if (eisel_lemire(c.first, out))
+            {
+                CHECK(bits_of(out) == c.second);
+            }
+            else
+            {
+                // only tokens with more than 19 significant digits are left to
+                // strtod: those whose value lies too close to a tie
+                CHECK(significant_digits(c.first) > 19);
+            }
        }
    }

-    SECTION("binary32")
-    {
-        using binary32 = nlohmann::detail::ieee_binary_format<24>;
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(0, 1) == 0x3F800000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-1, 1) == 0x3DCCCCCDu);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-1, 15) == 0x3FC00000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(0, 16777217) == 0x4B800000u); // tie, to even
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(0, 16777219) == 0x4B800002u); // tie, to even
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-45, 1) == 0x00000001u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-46, 7) == 0x00000000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-46, 8) == 0x00000001u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-65, 9999999999999999999u) == 0x00000000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(20, 3402823466385288598u) == 0x7F7FFFFFu);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(20, 3402823669209384635u) == 0x7F800000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(39, 1) == 0x7F800000u);
-        CHECK(nlohmann::detail::eisel_lemire<binary32>(-5, 0) == 0x00000000u);
-    }
-
    SECTION("round trip")
    {
-        // every double written by to_chars and read back, and its 17-digit
-        // form with trailing digits that make the token longer than 19 digits
+        // every double written by to_chars and read back, also with trailing
+        // digits that make the token longer than 19 digits
        std::uint64_t state = 5295;
+        std::size_t declined = 0;
        for (int i = 0; i < 200000; ++i)
        {
            state ^= state << 13u;
@@ -1529,52 +1277,31 @@ TEST_CASE("Eisel-Lemire float conversion")
            std::array<char, 64> buffer{};
            const char* end = nlohmann::detail::to_chars(buffer.data(), buffer.data() + buffer.size(), d);
            const std::string token(buffer.data(), static_cast<std::size_t>(end - buffer.data()));
-            CAPTURE(token);
-            CHECK(native_bits64(token) == b);
+            CAPTURE(token)
+            double out = 0;
+            REQUIRE(eisel_lemire(token, out));
+            CHECK(bits_of(out) == b);

-            // insert digits before the exponent of the 17-digit form: that
-            // form lies strictly inside the rounding interval of the double
-            // (the shortest one may lie on its boundary), and the digits move
-            // it by far less than the distance to the boundary, so the value
-            // must not change
-            std::array<char, 64> digits17{};
-            static_cast<void>(std::snprintf(digits17.data(), digits17.size(), "%.17g", d)); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
-            std::string longer = digits17.data();
+            // insert digits before the exponent: the value moves by far less
+            // than the distance to the rounding boundary, so it must not change
+            std::string longer = token;
            const std::size_t e = longer.find('e');
            const std::size_t dot = longer.find('.');
            const std::string extra = dot == std::string::npos ? ".000000000000000000001" : "000000000000000000001";
            longer.insert(e == std::string::npos ? longer.size() : e, extra);
-            CAPTURE(longer);
-            CHECK(native_bits64(longer) == b);
-        }
-    }
-
-    SECTION("round trip, binary32")
-    {
-        std::uint32_t state = 5295;
-        for (int i = 0; i < 100000; ++i)
-        {
-            state ^= state << 13u;
-            state ^= state >> 17u;
-            state ^= state << 5u;
-            std::uint32_t b = state;
-            if ((b & 0x7F800000u) == 0x7F800000u)
+            CAPTURE(longer)
+            if (eisel_lemire(longer, out))
            {
-                continue; // infinity or NaN
+                CHECK(bits_of(out) == b);
            }
-            if (i % 4 == 0)
+            else
            {
-                b &= 0x807FFFFFu; // subnormals
+                // w and w + 1 round differently: only when the value is very
+                // close to a rounding boundary
+                ++declined;
            }
-            float f = 0;
-            std::memcpy(&f, &b, sizeof(f));
-
-            std::array<char, 64> buffer{};
-            const char* end = nlohmann::detail::to_chars(buffer.data(), buffer.data() + buffer.size(), f);
-            const std::string token(buffer.data(), static_cast<std::size_t>(end - buffer.data()));
-            CAPTURE(token);
-            CHECK(native_bits32(token) == b);
        }
+        CHECK(declined < 1000); // 107 of the 200,000
    }

    SECTION("used by the lexer")
@@ -1588,177 +1315,3 @@ TEST_CASE("Eisel-Lemire float conversion")
                             "[json.exception.out_of_range.406] number overflow parsing '1.7976931348623159e308'", json::out_of_range&);
    }
 }
-
-namespace
-{
-using float_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, float>;
-
-// the bits of the float that parse() gives for a token, via both scanners;
-// the value must be the same for both
-template<typename Json, typename Bits>
-void check_parse(const std::string& token, Bits expected, Bits infinity)
-{
-    std::stringstream stream(token);
-    if ((expected & ~(Bits{1} << (8 * sizeof(Bits) - 1))) == infinity)
-    {
-        Json _;
-        CHECK_THROWS_WITH_AS(_ = Json::parse(token), ("[json.exception.out_of_range.406] number overflow parsing '" + token + "'").c_str(), typename Json::out_of_range&);
-        CHECK_THROWS_WITH_AS(_ = Json::parse(stream), ("[json.exception.out_of_range.406] number overflow parsing '" + token + "'").c_str(), typename Json::out_of_range&);
-        return;
-    }
-    const Json contiguous = Json::parse(token);
-    const Json streamed = Json::parse(stream);
-    if (contiguous.is_number_float()) // not an integer that fits
-    {
-        CHECK(bits_of(contiguous.template get<typename Json::number_float_t>()) == expected);
-        CHECK(bits_of(streamed.template get<typename Json::number_float_t>()) == expected);
-    }
-    else
-    {
-        CHECK(streamed.is_number_integer());
-    }
-}
-} // namespace
-
-TEST_CASE("float conversion of hard cases")
-{
-    // see float_hard_cases.hpp
-    for (const auto& c : float_hard_cases::cases())
-    {
-        const std::string token = c.token;
-        CAPTURE(token);
-        CHECK(native_bits64(token) == c.bits64);
-        CHECK(native_bits32(token) == c.bits32);
-        check_parse<json>(token, c.bits64, std::uint64_t{0x7FF0000000000000u});
-        check_parse<float_json>(token, c.bits32, std::uint32_t{0x7F800000u});
-    }
-}
-
-TEST_CASE("float overflow and underflow in the parser")
-{
-    SECTION("double")
-    {
-        check_parse<json>("1.7976931348623157e308", std::uint64_t{0x7FEFFFFFFFFFFFFFu}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("1.7976931348623159e308", std::uint64_t{0x7FF0000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("-1e309", std::uint64_t{0xFFF0000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("1" + std::string(400, '0'), std::uint64_t{0x7FF0000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("1e99999999999999999999", std::uint64_t{0x7FF0000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        // an underflow gives a zero with the sign of the token
-        check_parse<json>("1e-400", std::uint64_t{0}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("-1e-400", std::uint64_t{0x8000000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("-2.4703282292062327e-324", std::uint64_t{0x8000000000000000u}, std::uint64_t{0x7FF0000000000000u});
-        check_parse<json>("0." + std::string(400, '0') + "1", std::uint64_t{0}, std::uint64_t{0x7FF0000000000000u});
-    }
-
-    SECTION("float")
-    {
-        check_parse<float_json>("3.4028234e38", std::uint32_t{0x7F7FFFFFu}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("3.4028236e38", std::uint32_t{0x7F800000u}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("-1e39", std::uint32_t{0xFF800000u}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("1e-46", std::uint32_t{0}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("-1e-46", std::uint32_t{0x80000000u}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("-7.006492321624085e-46", std::uint32_t{0x80000000u}, std::uint32_t{0x7F800000u});
-        check_parse<float_json>("-7.006492321624086e-46", std::uint32_t{0x80000001u}, std::uint32_t{0x7F800000u});
-    }
-}
-
-TEST_CASE("string scanning kernels")
-{
-    // the word-at-a-time kernels must stop exactly where a byte-by-byte scan
-    // stops, for any content, length, and alignment
-    const auto reference_special = [](const unsigned char* data, std::size_t n)
-    {
-        std::size_t i = 0;
-        while (i < n && !nlohmann::detail::is_string_special(data[i]))
-        {
-            ++i;
-        }
-        return i;
-    };
-    const auto reference_copyable = [](const unsigned char* data, std::size_t n)
-    {
-        std::size_t i = 0;
-        while (i < n && nlohmann::detail::is_ascii_copyable(data[i]))
-        {
-            ++i;
-        }
-        return i;
-    };
-    const auto reference_bulk_run = [](const unsigned char* data, std::size_t n)
-    {
-        std::size_t i = 0;
-        while (i < n)
-        {
-            if (data[i] < 0x80u)
-            {
-                if (nlohmann::detail::is_string_special(data[i]))
-                {
-                    break;
-                }
-                ++i;
-                continue;
-            }
-            const std::size_t seq = nlohmann::detail::validate_one_utf8(data + i, n - i);
-            if (seq == 0)
-            {
-                break;
-            }
-            i += seq;
-        }
-        return i;
-    };
-
-    // pieces: ordinary ASCII, stops, DEL, well-formed sequences of every
-    // length, and ill-formed or truncated ones
-    const std::vector<std::string> pieces =
-    {
-        "a", "Z", " ", "~", "0123456789", "\"", "\\", std::string(1, '\0'), "\n", "\x1F", "\x7F",
-        "\xC3\xA4", "\xE2\x82\xAC", "\xE6\x97\xA5\xE6\x9C\xAC", "\xF0\x9F\x98\x80", "\xED\x9F\xBF",
-        "\x80", "\xC0\x80", "\xC3", "\xE2\x82", "\xED\xA0\x80", "\xF4\x90\x80\x80", "\xFF",
-    };
-    std::uint64_t state = 5295;
-    const auto next = [&state]()
-    {
-        state ^= state << 13u;
-        state ^= state >> 7u;
-        state ^= state << 17u;
-        return state;
-    };
-    // the upper half as a 32-bit value: converts to std::size_t implicitly on
-    // every platform (a cast of std::uint64_t is useless where both are the
-    // same type, and required where std::size_t is 32 bits wide)
-    const auto next_small = [&next]()
-    {
-        return static_cast<std::uint32_t>(next() >> 32u);
-    };
-    for (int round = 0; round < 100000; ++round)
-    {
-        // mostly ordinary text, so that runs span several words
-        std::string text(next_small() % 8u, '.');
-        const std::size_t count = next_small() % 12u;
-        for (std::size_t k = 0; k < count; ++k)
-        {
-            const std::size_t p = (next() % 4 == 0) ? next_small() % pieces.size() : 0;
-            text += pieces[p];
-            text += std::string(next_small() % 10u, 'x');
-        }
-        const auto* data = reinterpret_cast<const unsigned char*>(text.data()); // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
-        for (std::size_t offset = 0; offset < 3 && offset <= text.size(); ++offset)
-        {
-            const std::size_t n = text.size() - offset;
-            CAPTURE(text);
-            CAPTURE(offset);
-            CHECK(nlohmann::detail::find_string_special(data + offset, n) == reference_special(data + offset, n));
-            CHECK(nlohmann::detail::find_ascii_copyable_run(data + offset, n) == reference_copyable(data + offset, n));
-            CHECK(nlohmann::detail::scalar_string_bulk_run(data + offset, n) == reference_bulk_run(data + offset, n));
-        }
-    }
-
-    // the trailing-zero count, whichever implementation the compiler gets
-    for (int k = 0; k < 64; ++k)
-    {
-        const std::uint64_t bit = std::uint64_t{1} << k;
-        CHECK(nlohmann::detail::count_trailing_zeros(bit) == k);
-        CHECK(nlohmann::detail::count_trailing_zeros(bit | (bit << 1u) | 0x8000000000000000u) == k);
-    }
-}
@@ -2561,7 +2561,7 @@ TEST_CASE("last-read diagnostics are identical across input adapters")

    for (const auto& s : inputs)
    {
-        CAPTURE(s);
+        CAPTURE(s)

        // reference: contiguous std::string -> seekable (lazy) path
        const std::string reference = parse_error_message(s);
@@ -2645,7 +2645,7 @@ TEST_CASE("diagnostic positions: value lifetime, input adapters, and SAX")

        SECTION("move constructor resets the moved-from value to npos")
        {
-            // basic_json(basic_json&&) (json.hpp, around line 1265) copies
+            // basic_json(basic_json&&) (json.hpp, around line 1951) copies
            // other's start_position/end_position into *this and then resets
            // other's to npos (see the cppcheck-suppress[accessForwarded]
            // annotation there, which flags this reset as worth a second
@@ -857,7 +857,7 @@ TEST_CASE("equality of objects whose entries have no fixed order")

    for (const std::size_t depth : std::vector<std::size_t> {0, 200})
    {
-        CAPTURE(depth);
+        CAPTURE(depth)

        const unordered_json descending = nest(make_unordered_object(true), depth);
        const unordered_json ascending = nest(make_unordered_object(false), depth);
@@ -909,7 +909,7 @@ TEST_CASE("equality of an object whose comparator treats different keys as equiv

    for (const std::size_t depth : std::vector<std::size_t> {0, 127, 128, 200})
    {
-        CAPTURE(depth);
+        CAPTURE(depth)

        const ci_json x = nest(a, depth);
        const ci_json y = nest(b, depth);
@@ -935,7 +935,7 @@ TEST_CASE("containers are compared element by element")

    for (const std::size_t depth : std::vector<std::size_t> {0, 200})
    {
-        CAPTURE(depth);
+        CAPTURE(depth)

        // objects with different keys
        {
@@ -85,7 +85,7 @@ TEST_CASE("other constructors and destructor")
        CHECK(j.type() == json::value_t::object);
        const json k(std::move(j));
        CHECK(k.type() == json::value_t::object);
-        CHECK(j.type() == json::value_t::null); // NOLINT: access after move is OK here
+        CHECK(j.type() == json::value_t::null); // NOLINT(bugprone-use-after-move,hicpp-invalid-access-moved) access after move is OK here
    }

    SECTION("copy assignment")
@@ -1630,7 +1630,7 @@ TEST_CASE("value conversion")

 enum class cards {kreuz, pik, herz, karo};

-// NOLINTNEXTLINE(misc-use-internal-linkage,misc-const-correctness,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+// NOLINTNEXTLINE(misc-use-internal-linkage,misc-const-correctness) - false positive
 NLOHMANN_JSON_SERIALIZE_ENUM(cards,
 {
    {cards::kreuz, "kreuz"},
@@ -1648,7 +1648,7 @@ enum TaskState // NOLINT(cert-int09-c,readability-enum-initial-value,cppcoreguid
    TS_INVALID = -1,
 };

-// NOLINTNEXTLINE(misc-const-correctness,misc-use-internal-linkage,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+// NOLINTNEXTLINE(misc-const-correctness,misc-use-internal-linkage) - false positive
 NLOHMANN_JSON_SERIALIZE_ENUM(TaskState,
 {
    {TS_INVALID, nullptr},
@@ -1698,7 +1698,7 @@ TEST_CASE("JSON to enum mapping")

 enum class strict_cards {kreuz, pik, herz, karo, andere}; // andere not included in mapping

-// NOLINTNEXTLINE(misc-use-internal-linkage,misc-const-correctness,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+// NOLINTNEXTLINE(misc-use-internal-linkage,misc-const-correctness) - false positive
 NLOHMANN_JSON_SERIALIZE_ENUM_STRICT(strict_cards,
 {
    {strict_cards::kreuz, "kreuz"},
@@ -1717,7 +1717,7 @@ enum StrictTaskState // NOLINT(cert-int09-c,readability-enum-initial-value,cppco
    STRICT_TS_INVALID = -1,
 };

-// NOLINTNEXTLINE(misc-const-correctness,misc-use-internal-linkage,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays) - false positive
+// NOLINTNEXTLINE(misc-const-correctness,misc-use-internal-linkage) - false positive
 NLOHMANN_JSON_SERIALIZE_ENUM_STRICT(StrictTaskState,
 {
    {STRICT_TS_INVALID, nullptr},
@@ -191,7 +191,7 @@ TEST_CASE("hash of deeply nested values")
        // every depth on either side of where the iterative path takes over
        for (std::size_t depth = 0; depth <= (2 * nlohmann::detail::recursion_depth_limit()) + 10; ++depth)
        {
-            CAPTURE(depth);
+            CAPTURE(depth)
            const auto arrays = nested<json>(depth, false);
            const auto objects = nested<json>(depth, true);
            const auto ordered = nested<ordered_json>(depth, true);
@@ -212,7 +212,7 @@ TEST_CASE("hash of deeply nested values")
                    false, true
                })
        {
-            CAPTURE(objects);
+            CAPTURE(objects)
            const auto text = nested_text(depth, objects);
            const auto a = json::parse(text);
            const auto b = json::parse(text);
@@ -1893,7 +1893,7 @@ TEST_CASE("JSON patch - every operation on ordered_json")
        };
        for (const auto& target : targets)
        {
-            CAPTURE(target.dump());
+            CAPTURE(target.dump())
            CHECK(source.patch(ordered_json::diff(source, target)) == target);
        }
    }
@@ -1,399 +0,0 @@
-//     __ _____ _____ _____
-//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
-// |  |  |__   |  |  | | | |  version 3.12.0
-// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
-//
-// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
-// SPDX-License-Identifier: MIT
-
-#include "doctest_compatibility.h"
-
-#include <nlohmann/json.hpp>
-#include <nlohmann/detail/view/builder.hpp>
-#include <nlohmann/detail/view/string_ref.hpp>
-using nlohmann::json;
-
-#include <cstdint>
-#include <fstream>
-#include <map>
-#include <memory>
-#include <random>
-#include <sstream>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <test_data.hpp>
-
-namespace
-{
-using nlohmann::detail::view::document_data;
-using nlohmann::detail::view::node;
-
-// the node index of a text; a vector input has no terminating NUL, so that
-// AddressSanitizer catches any read past the last byte
-struct built
-{
-    std::unique_ptr<document_data, document_data::deleter> data{}; // NOLINT(readability-redundant-member-init)
-    std::vector<char> copy{}; // NOLINT(readability-redundant-member-init)
-    bool ok = false;
-    nlohmann::detail::view::parse_failure failure{};
-};
-
-template<typename FloatType = double>
-built build(const std::string& text, bool comments, bool trailing_commas, bool sentinel)
-{
-    built r;
-    r.data.reset(document_data::create(nlohmann::detail::view::estimate_nodes(text.data(), text.size())));
-    const char* src = text.c_str();
-    if (!sentinel)
-    {
-        r.copy.assign(text.begin(), text.end());
-        src = r.copy.data();
-    }
-    r.ok = nlohmann::detail::view::build < FloatType, !nlohmann::detail::abi_config::strict_nul_handling > (*r.data, src, text.size(), comments, trailing_commas, sentinel, r.failure);
-    r.data->src = src;
-    r.data->base[0] = src;
-    r.data->base[1] = r.data->arena.data();
-    return r;
-}
-
-// the value of a subtree, as json::parse would build it
-json value_of(const document_data& d, const node*& n)
-{
-    const node& x = *n;
-    ++n;
-    switch (static_cast<json::value_t>(x.kind))
-    {
-        case json::value_t::object:
-        {
-            json o = json::object();
-            const node* const end = &x + x.next;
-            while (n != end)
-            {
-                const std::string key(d.str(*n), n->len);
-                ++n;
-                o[key] = value_of(d, n);
-            }
-            return o;
-        }
-        case json::value_t::array:
-        {
-            json a = json::array();
-            const node* const end = &x + x.next;
-            while (n != end)
-            {
-                a.push_back(value_of(d, n));
-            }
-            return a;
-        }
-        case json::value_t::string:
-            return std::string(d.str(x), x.len);
-        case json::value_t::boolean:
-            return (x.flags & nlohmann::detail::view::node_flags::is_true) != 0;
-        case json::value_t::number_integer:
-            return static_cast<std::int64_t>(nlohmann::detail::view::integer_bits(x));
-        case json::value_t::number_unsigned:
-            return nlohmann::detail::view::integer_bits(x);
-        case json::value_t::number_float:
-            return json::parse(std::string(d.src + x.off, x.len)).get<double>();
-        case json::value_t::null:
-        case json::value_t::binary:
-        case json::value_t::discarded:
-        default:
-            return nullptr;
-    }
-}
-
-json value_of(const built& b)
-{
-    const node* n = b.data->tape;
-    json v = value_of(*b.data, n);
-    CHECK(n == b.data->tape + b.data->tape_size);
-    return v;
-}
-
-// accept/reject and the value must match json::parse, for all options and
-// with and without a NUL after the text
-void check_same(const std::string& text)
-{
-    CAPTURE(text);
-    for (int options = 0; options < 4; ++options)
-    {
-        const bool comments = (options & 1) != 0;
-        const bool trailing_commas = (options & 2) != 0;
-        const bool accepted = json::accept(text, comments, trailing_commas);
-        for (const bool sentinel :
-                {
-                    true, false
-                })
-        {
-            const built b = build(text, comments, trailing_commas, sentinel);
-            CHECK(b.ok == accepted);
-            if (b.ok && accepted)
-            {
-                CHECK(value_of(b) == json::parse(text, nullptr, true, comments, trailing_commas));
-            }
-        }
-    }
-}
-
-// a small deterministic generator of documents
-struct generator
-{
-    std::mt19937 rng{5295}; // NOLINT(cert-msc32-c,cert-msc51-cpp,bugprone-random-generator-seed)
-
-    int r(int n)
-    {
-        return static_cast<int>(rng() % static_cast<unsigned>(n));
-    }
-
-    void ws(std::string& o)
-    {
-        for (int n = r(4) == 0 ? r(12) : r(2); n > 0; --n)
-        {
-            o += " \n\t\r  "[r(6)];
-        }
-    }
-
-    void str(std::string& o)
-    {
-        static const char* const pieces[] = {"a", "Z", " ", "~", "\\n", "\\\"", "\\\\", "\\/", "\\u00e9", "\\ud83d\\ude00", "\xc3\xa9", "\xe3\x81\x82", "\xf0\x9f\x98\x80", "\x7f", "\\u001f", "long enough text to leave the first 16 bytes"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-        o += '"';
-        for (int n = r(3) == 0 ? r(20) : r(6); n > 0; --n)
-        {
-            o += pieces[r(16)];
-        }
-        o += '"';
-    }
-
-    void num(std::string& o)
-    {
-        static const char* const numbers[] = {"0", "-0", "1", "-1", "12", "123456789", "1234567890123456789", "9223372036854775807", "-9223372036854775808", // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-                                              "9223372036854775808", "18446744073709551615", "18446744073709551616", "-9223372036854775809",
-                                              "1.5", "-2.25e-3", "1e10", "1E+2", "0.000001", "3.141592653589793238462643", "1e308", "-1e-400", "123.456e7"
-                                             };
-        o += numbers[r(22)];
-    }
-
-    void value(std::string& o, int depth)
-    {
-        ws(o);
-        const int k = depth > 5 ? 2 + r(6) : r(8);
-        if (k == 0 || k == 1)
-        {
-            const bool object = k == 0;
-            o += object ? '{' : '[';
-            for (int i = r(5); i > 0; --i)
-            {
-                ws(o);
-                if (object)
-                {
-                    str(o);
-                    ws(o);
-                    o += ':';
-                }
-                value(o, depth + 1);
-                o += i > 1 ? "," : "";
-            }
-            ws(o);
-            o += object ? '}' : ']';
-        }
-        else if (k < 4)
-        {
-            str(o);
-        }
-        else if (k < 6)
-        {
-            num(o);
-        }
-        else
-        {
-            static const char* const literals[] = {"true", "false", "null"}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-            o += literals[r(3)];
-        }
-        ws(o);
-    }
-};
-} // namespace
-
-TEST_CASE("json_view string_ref")
-{
-    // std::string_view in C++17, a stand-in with the same members before
-    using nlohmann::detail::view::string_ref;
-    const std::string text = "abc";
-    const string_ref r(text);
-    CHECK(r.length() == 3);
-    CHECK(std::string(r.begin(), r.end()) == "abc");
-    CHECK(r[1] == 'b');
-    CHECK(r != string_ref("abd"));
-    CHECK_FALSE(r != string_ref("abcd", 3));
-    std::ostringstream o;
-    o << r;
-    CHECK(o.str() == "abc");
-}
-
-TEST_CASE("json_view builder")
-{
-    SECTION("scalars and containers")
-    {
-        for (const char* text :
-                {
-                    "null", "true", "false", "0", "-0", "42", "-42", "1.5", "\"\"", "\"abc\"", "[]", "{}", "[1,2,3]", "{\"a\":1,\"b\":[true,null]}", // NOLINT(modernize-raw-string-literal)
-                    " [ 1 , 2 ] ", "{\"a\" : {\"b\" : {}}}", "[[[]]]", "\"\\u00e4\\n\\ud83d\\ude00\"", "{\"a\":1,\"a\":2}", "18446744073709551616", // NOLINT(modernize-raw-string-literal)
-                    "-9223372036854775809", "123456789012345678901234567890", "1e400", "-1e400", "1.7976931348623157e308"
-                })
-        {
-            check_same(text);
-        }
-
-        // the midpoint between the largest double and 2^1024 rounds to
-        // infinity (an overflow), one less to the largest double: with more
-        // than 19 digits, Eisel-Lemire cannot decide these, and the overflow
-        // check needs the exact comparison with the midpoint
-        const std::string midpoint = "179769313486231580793728971405303415079934132710037826936173778980444968292764750946649017977587207096330286416692887910946555547851940402630657488671505820681908902000708383676273854845817711531764475730270069855571366959622842914819860834936475292719074168444365510704342711559699508093042880177904174497792";
-        const std::string below = "179769313486231580793728971405303415079934132710037826936173778980444968292764750946649017977587207096330286416692887910946555547851940402630657488671505820681908902000708383676273854845817711531764475730270069855571366959622842914819860834936475292719074168444365510704342711559699508093042880177904174497791";
-        check_same(midpoint);
-        check_same("-" + midpoint);
-        check_same(below);
-        check_same("[" + below + "," + midpoint + "]");
-
-        // the check uses the floating-point type of the document: with float,
-        // the view rejects what parse() rejects (out_of_range.406), and a
-        // double document is not affected
-        using float_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, float>;
-        CHECK_FALSE(float_json::accept("1e39"));
-        CHECK(float_json::accept("3.4028235e38"));
-        CHECK_FALSE(float_json::accept("3.4028236e38"));
-        for (const char* text :
-                {
-                    "1e39", "-1e39", "3.4028235e38", "-3.4028235e38", "3.4028236e38", "-3.4028236e38", "3.4028234663852886e38", "1e38",
-                    "340282356779733661637539395458142568448", "340282356779733661637539395458142568447.99", "0.00034028236e42",
-                    "[1.5e38, 3.5e38]", "{\"a\": 1e-50, \"b\": 1e39}"
-                })
-        {
-            CAPTURE(text);
-            const bool float_accepted = float_json::accept(text);
-            for (const bool sentinel :
-                    {
-                        true, false
-                    })
-            {
-                const built f = build<float>(text, false, false, sentinel);
-                CHECK(f.ok == float_accepted);
-                if (!f.ok)
-                {
-                    CHECK(f.failure.code == nlohmann::detail::view::error_code::number_overflow);
-                }
-                CHECK(build<double>(text, false, false, sentinel).ok == json::accept(text));
-            }
-        }
-    }
-
-    SECTION("malformed input")
-    {
-        for (const char* text :
-                {
-                    "", " ", "[", "]", "{", "}", "[1,]", "{\"a\":1,}", "[1 2]", "{\"a\" 1}", "{1:2}", "tru", "nul", "fals", "truex", "-", "01", "1.", ".5", "1e", "1e+",
-                    "\"", "\"abc", "\"\\x\"", "\"\\u12\"", "\"\\u12G4\"", "\"\\ud800\"", "\"\\udc00\"", "\"\\ud800\\u0041\"", "\"\x01\"", "\"\xff\"", "\"\xc3\"", // NOLINT(modernize-raw-string-literal)
-                    "\"\xe0\x80\x80\"", "\"\xed\xa0\x80\"", "[1]x", "[1] [2]", "/", "/*", "/* */ 1", "// c\n1", "1 // c", "[1,/*c*/2]", "[1,2,]"
-                })
-        {
-            check_same(text);
-        }
-    }
-
-    SECTION("NUL, BOM, and whitespace")
-    {
-        // a NUL inside a string is a control character, as for json::parse
-        // (where a NUL ends the input, it does so only between values)
-        for (const bool sentinel :
-                {
-                    true, false
-                })
-        {
-            const built b = build(std::string("[\"ab\0cd\"]", 9), false, false, sentinel);
-            CHECK(!b.ok);
-            CHECK(b.failure.code == nlohmann::detail::view::error_code::string_control_character);
-            CHECK(b.failure.offset == 4);
-        }
-        check_same(std::string("[1]\0garbage", 11));
-        check_same(std::string("[1\0]", 4));
-        check_same(std::string("[1, // c\0\n2]", 12));
-        check_same(std::string("[1, /* c\0 */ 2]", 15));
-        check_same("\xEF\xBB\xBF[1]");
-        check_same("\xEF\xBB[1]");
-        check_same(" \t\r\n 7 \n");
-        for (const char* text :
-                {"[1]\r", "[1]\n", "[1]\r\n", "[1,\r2]", "[1,\r\n2]", "7\r", "\"x\"\r", "{\"a\":\r\n1}\r", "[\n  1,\n  2\n]", "{\n    \"a\": [\n        1\n    ]\n}"
-                })
-        {
-            check_same(text);
-        }
-    }
-
-    SECTION("deep nesting")
-    {
-        // the open containers beyond 64 levels live on the heap
-        for (const std::size_t depth :
-                {
-                    63u, 64u, 65u, 1000u, 100000u
-                })
-        {
-            const std::string arrays = std::string(depth, '[') + std::string(depth, ']');
-            const built b = build(arrays, false, false, false);
-            REQUIRE(b.ok);
-            CHECK(b.data->tape_size == depth);
-            CHECK(b.data->tape[0].next == depth);
-            std::string objects;
-            for (std::size_t i = 0; i < depth; ++i)
-            {
-                objects += "{\"a\":";
-            }
-            objects += '1' + std::string(depth, '}');
-            const built o = build(objects, false, false, false);
-            REQUIRE(o.ok);
-            CHECK(o.data->tape_size == (2 * depth) + 1);
-            CHECK(!build(std::string(depth, '[') + std::string(depth - 1, ']'), false, false, false).ok);
-        }
-    }
-
-    SECTION("generated documents and damaged copies")
-    {
-        generator g;
-        for (int i = 0; i < 3000; ++i)
-        {
-            std::string text;
-            g.value(text, 0);
-            check_same(text);
-            // damage: flip one byte, or cut the text
-            std::string damaged = text;
-            const auto at = static_cast<std::size_t>(g.r(static_cast<int>(damaged.size())));
-            static const char replacements[] = {'x', '"', '\\', ',', ':', ']', '}', '[', '{', '1', '-', '.', 'e', '\0', '\n', '/'}; // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
-            damaged[at] = replacements[g.r(16)];
-            check_same(damaged);
-            check_same(text.substr(0, at));
-        }
-    }
-
-    SECTION("test files")
-    {
-        for (const char* name :
-                {
-                    "/json.org/1.json", "/json.org/2.json", "/json.org/3.json", "/json.org/4.json", "/json.org/5.json",
-                    "/json_testsuite/sample.json", "/nativejson-benchmark/canada.json", "/nativejson-benchmark/citm_catalog.json",
-                    "/nativejson-benchmark/twitter.json", "/json_tests/pass1.json", "/json_tests/pass2.json", "/json_tests/pass3.json"
-                })
-        {
-            CAPTURE(name);
-            std::ifstream f(std::string(TEST_DATA_DIRECTORY) + name, std::ios::binary);
-            std::stringstream ss;
-            ss << f.rdbuf();
-            const std::string text = ss.str();
-            REQUIRE(!text.empty());
-            const built b = build(text, false, false, true);
-            REQUIRE(b.ok);
-            CHECK(value_of(b) == json::parse(text));
-        }
-    }
-}
@@ -116,7 +116,7 @@ TEST_CASE("tests on deeply nested JSONs")
            // are known to meet cleanly - wherever the bound is set.
            for (std::size_t d = 1; d <= 300; ++d)
            {
-                CAPTURE(d);
+                CAPTURE(d)

                const json array = json::parse(std::string(d, '[') + '0' + std::string(d, ']'));
                const json array_copy(array); // NOLINT(performance-unnecessary-copy-initialization): the copy is what is tested
@@ -257,11 +257,10 @@ struct LocaleSwitchingSax final: public nlohmann::json_sax<json>

 TEST_CASE("locale changes between lexer construction and number conversion (#5198)")
 {
-    // float and double are converted without the locale. A long double that
-    // is not binary64 can take the strtold fallback, which honors the locale
-    // that is current at conversion time. The numbers are chosen so that it
-    // does: too many significant digits for Clinger's fast path, an underflow
-    // that std::from_chars rejects, and a plain value.
+    // The numbers are chosen so that the conversion also takes the strtod
+    // fallback, which honors the locale that is current at conversion time:
+    // too many significant digits for Clinger's fast path, an underflow that
+    // std::from_chars rejects, and a plain value.
    const std::vector<std::string> numbers = {"3.14159265358979323846", "1.5e-400", "12.34", "-0.000123456789012345678"};
    std::string text = "[";
    for (const auto& n : numbers)
@@ -287,8 +286,8 @@ TEST_CASE("locale changes between lexer construction and number conversion (#519

    for (const auto& transition : transitions)
    {
-        CAPTURE(transition.first);
-        CAPTURE(transition.second);
+        CAPTURE(transition.first)
+        CAPTURE(transition.second)

        if (std::setlocale(LC_NUMERIC, transition.first) == nullptr)
        {
@@ -325,8 +324,7 @@ TEST_CASE("locale changes between lexer construction and number conversion (#519
            }
        }

-        // a long double goes through std::strtold unless it is binary64 or
-        // std::from_chars supports it
+        // a long double goes through std::strtold unless std::from_chars supports it
        {
            bool switched = false;
            const auto cb = [&](int /*depth*/, long_double_json::parse_event_t event, long_double_json& /*parsed*/) noexcept
@@ -352,15 +350,8 @@ TEST_CASE("locale with a multi-byte decimal point")
 {
    // Some locales use a decimal point that is not a single character, e.g.
    // U+066B ARABIC DECIMAL SEPARATOR (two bytes in UTF-8). It cannot be
-    // substituted in place for '.', so the strtold fallback (only for long
-    // double formats other than binary64) converts a copy of the token with
-    // the whole decimal point instead (#5660). The values must be those of the
-    // "C" locale.
-    using long_double_json = nlohmann::basic_json<std::map, std::vector, std::string, bool, std::int64_t, std::uint64_t, long double>;
-    const char* const long_double_numbers = "[3.14159265358979323846, 1.5e-400, -0.000123456789012345678]";
-    REQUIRE(std::setlocale(LC_NUMERIC, "C") != nullptr);
-    const long_double_json expected_long_double = long_double_json::parse(long_double_numbers);
-
+    // substituted in place for '.', so the strtod fallback stops early. The
+    // conversion must still terminate rather than retry forever.
    const std::array<const char*, 6> names = {{"ar_EG.UTF-8", "ar_SA.UTF-8", "fa_IR.UTF-8", "ps_AF.UTF-8", "ar_EG", "fa_IR"}};
    bool tested = false;
    for (const char* name : names)
@@ -374,24 +365,16 @@ TEST_CASE("locale with a multi-byte decimal point")
        {
            continue;
        }
-        CAPTURE(name);
+        CAPTURE(name)
        tested = true;

        // too many significant digits for Clinger's fast path, and an underflow
-        // that std::from_chars rejects: double does not depend on the locale
+        // that std::from_chars rejects: both reach the strtod fallback
        json j;
        CHECK_NOTHROW(j = json::parse("[3.14159265358979323846, 1.5e-400, -0.000123456789012345678]"));
        CHECK(j.is_array());
-        CHECK(j[0] == 3.14159265358979323846);
-        CHECK(j[1] == 0.0);
-        CHECK(j[2] == -0.000123456789012345678);
        CHECK(json::accept("3.14159265358979323846"));

-        // a long double that reaches the strtold fallback is not truncated
-        long_double_json ld;
-        CHECK_NOTHROW(ld = long_double_json::parse(long_double_numbers));
-        CHECK(ld == expected_long_double);
-
        // a value the locale-independent paths convert is not affected
        CHECK(json::parse("12.5") == 12.5);
    }
@@ -305,10 +305,10 @@ TEST_CASE("JSON Merge Patch on deeply nested values")
        // over (detail::recursion_depth_limit(), 128)
        for (std::size_t depth = 0; depth <= 300; ++depth)
        {
-            CAPTURE(depth);
+            CAPTURE(depth)
            for (int variant = 0; variant < 3; ++variant)
            {
-                CAPTURE(variant);
+                CAPTURE(variant)
                const json patch = json::parse(nested_objects(depth, variant));

                json result = json::parse(nested_objects(depth, (variant + 1) % 3));
@@ -1084,10 +1084,10 @@ TEST_CASE("update() on deeply nested values")
        // over (detail::recursion_depth_limit(), 128)
        for (std::size_t depth = 0; depth <= 300; ++depth)
        {
-            CAPTURE(depth);
+            CAPTURE(depth)
            for (int variant = 0; variant < 3; ++variant)
            {
-                CAPTURE(variant);
+                CAPTURE(variant)
                const json source = json::parse(nested_objects(depth, variant));
                json result = json::parse(nested_objects(depth, (variant + 1) % 3));
                json expected = result;
@@ -113,7 +113,7 @@ TEST_CASE("JSON_PRECISE_STREAM_POSITION")

        for (const auto& test : tests)
        {
-            CAPTURE(test.first);
+            CAPTURE(test.first)
            std::istringstream ss(test.first);
            json j;
            ss >> j;
@@ -135,7 +135,7 @@ TEST_CASE("JSON_PRECISE_STREAM_POSITION")

        for (const auto& test : tests)
        {
-            CAPTURE(test.first);
+            CAPTURE(test.first)
            std::istringstream ss(test.first);
            json j;
            ss >> j;
@@ -149,7 +149,7 @@ TEST_CASE("JSON_PRECISE_STREAM_POSITION")
                {"1", "12", "-3.5e2", " 7 "
                })
        {
-            CAPTURE(s);
+            CAPTURE(s)
            std::istringstream ss(s);
            json j;
            ss >> j;
@@ -112,7 +112,7 @@ enum class for_1647
    two
 };

-// NOLINTNEXTLINE(misc-const-correctness,cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays): this is a false positive
+// NOLINTNEXTLINE(misc-const-correctness): this is a false positive
 NLOHMANN_JSON_SERIALIZE_ENUM(for_1647,
 {
    {for_1647::one, "one"},
@@ -849,13 +849,13 @@ TEST_CASE("issue #5338 - truncated CBOR tagged binary subtype is rejected")

    for (const auto& data : truncated_tags)
    {
-        CAPTURE(data);
+        CAPTURE(data)
        for (const auto tag_handler :
                {
                    json::cbor_tag_handler_t::ignore, json::cbor_tag_handler_t::store
                })
        {
-            CAPTURE(tag_handler);
+            CAPTURE(tag_handler)
            const auto result = json::from_cbor(data, true, false, tag_handler);
            CHECK(result.is_discarded());
        }
@@ -584,7 +584,7 @@ TEST_CASE("serialization of deeply nested values")
        // value are known to meet cleanly - wherever the bound is set.
        for (std::size_t d = 1; d <= 300; ++d)
        {
-            CAPTURE(d);
+            CAPTURE(d)

            const std::string array_text = std::string(d, '[') + '7' + std::string(d, ']');
            CHECK(json::parse(array_text).dump() == array_text);
@@ -604,7 +604,7 @@ TEST_CASE("serialization of deeply nested values")
    {
        for (std::size_t d = 120; d <= 140; ++d)
        {
-            CAPTURE(d);
+            CAPTURE(d)

            const json j = json::parse(std::string(d, '[') + '7' + std::string(d, ']'));

@@ -629,7 +629,7 @@ TEST_CASE("serialization of deeply nested values")
        // so it must not gain a newline when it is reached iteratively
        for (std::size_t d = 125; d <= 135; ++d)
        {
-            CAPTURE(d);
+            CAPTURE(d)

            const std::string compact = std::string(d, '[') + "[]" + std::string(d, ']');
            CHECK(json::parse(compact).dump() == compact);
@@ -711,10 +711,10 @@ TEST_CASE("serialization of every kind of value below the bound of the descent")

    for (const std::size_t depth : std::vector<std::size_t> {1, 200})
    {
-        CAPTURE(depth);
+        CAPTURE(depth)
        for (const auto& inner : values)
        {
-            CAPTURE(inner.dump());
+            CAPTURE(inner.dump())
            const json j = wrap_in_arrays(inner, depth);
            CHECK(j.dump() == std::string(depth, '[') + inner.dump() + std::string(depth, ']'));
            CHECK(j.dump(2) == expected_pretty_in_arrays(inner, depth));
@@ -725,7 +725,7 @@ TEST_CASE("serialization of every kind of value below the bound of the descent")
    {
        for (std::size_t d = 120; d <= 140; ++d)
        {
-            CAPTURE(d);
+            CAPTURE(d)

            // built from the inside out: {"k": <level below>, "n": <level>}
            json j = 7;
@@ -350,7 +350,7 @@ TEST_CASE("std::counted_iterator reaches the contiguous fast paths")

    for (const auto& text : diagnostic_docs)
    {
-        CAPTURE(text);
+        CAPTURE(text)
        const std::counted_iterator<const char*> it(text.data(), static_cast<std::iter_difference_t<const char*>>(text.size()));
        std::string counted_message;
        std::string string_message;
@@ -460,8 +460,8 @@ TEST_CASE("std::counted_iterator bulk scanning stops at the counted end")

    for (const auto& tc : cases)
    {
-        CAPTURE(tc.buffer);
-        CAPTURE(tc.count);
+        CAPTURE(tc.buffer)
+        CAPTURE(tc.count)
        const std::string buffer = tc.buffer;
        CHECK(via_counted(buffer, tc.count) == via_prefix(buffer, tc.count));
    }