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Author SHA1 Message Date
Niels Lohmann 6508d1d0e1 Point the MessagePack key note to the spec's profile section
The note linked to "Serialization: type to format conversion", which says nothing about key types. Restricting map keys to strings is only mentioned in the "Profile" section (under "Future discussion") as an example of a JSON-compatible profile, so link there and describe it as such instead of as a permission.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-27 18:20:36 +02:00
Niels Lohmann df9a000e3a Name the key type when rejecting non-string CBOR/MessagePack map keys
CBOR and MessagePack allow map keys of any type, but JSON object keys
are always strings, so such maps are rejected. The error so far was the
one for a malformed string (e.g. "expected length specification
(0xA0-0xBF, 0xD9-0xDB); last byte: 0xC0" for a nil key), which does not
tell the user what went wrong. Report the type of the key instead:

  syntax error while parsing MessagePack object key: only string keys
  are supported, but found nil; last byte: 0xC0

The exception id (parse_error.113) and type are unchanged. Malformed
string keys and a missing key keep their previous messages. Document
the restriction on the CBOR and MessagePack pages.

Refs #2766, #3381

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-27 16:40:40 +02:00
26 changed files with 487 additions and 313 deletions
+1 -1
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@@ -100,7 +100,7 @@ jobs:
container: ubuntu:focal
strategy:
matrix:
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls, ci_test_disableenumserialization, ci_test_disabletuplereferenceconversion, ci_test_skiplibraryversioncheck, ci_test_simdutf, ci_test_strict_nul_handling, ci_test_no_thread_local]
target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls, ci_test_disableenumserialization, ci_test_skiplibraryversioncheck, ci_test_simdutf, ci_test_strict_nul_handling, ci_test_no_thread_local]
steps:
- name: Install build-essential
run: apt-get update ; apt-get install -y build-essential unzip wget git libssl-dev
-6
View File
@@ -55,7 +55,6 @@ option(JSON_Diagnostic_Positions "Enable diagnostic positions." OFF)
option(JSON_GlobalUDLs "Place user-defined string literals in the global namespace." ON)
option(JSON_ImplicitConversions "Enable implicit conversions." ON)
option(JSON_DisableEnumSerialization "Disable default integer enum serialization." OFF)
option(JSON_DisableTupleReferenceConversion "Disable conversion from a one-element tuple of a JSON reference." OFF)
option(JSON_LegacyDiscardedValueComparison "Enable legacy discarded value comparison." OFF)
option(JSON_Install "Install CMake targets during install step." ${MAIN_PROJECT})
option(JSON_MultipleHeaders "Use non-amalgamated version of the library." ON)
@@ -102,10 +101,6 @@ if (JSON_DisableEnumSerialization)
message(STATUS "Enum integer serialization is disabled (JSON_DISABLE_ENUM_SERIALIZATION=1)")
endif()
if (JSON_DisableTupleReferenceConversion)
message(STATUS "Tuple reference conversion is disabled (JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1)")
endif()
if (JSON_LegacyDiscardedValueComparison)
message(STATUS "Legacy discarded value comparison enabled (JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1)")
endif()
@@ -148,7 +143,6 @@ target_compile_definitions(
$<$<NOT:$<BOOL:${JSON_GlobalUDLs}>>:JSON_USE_GLOBAL_UDLS=0>
$<$<NOT:$<BOOL:${JSON_ImplicitConversions}>>:JSON_USE_IMPLICIT_CONVERSIONS=0>
$<$<BOOL:${JSON_DisableEnumSerialization}>:JSON_DISABLE_ENUM_SERIALIZATION=1>
$<$<BOOL:${JSON_DisableTupleReferenceConversion}>:JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1>
$<$<BOOL:${JSON_Diagnostics}>:JSON_DIAGNOSTICS=1>
$<$<BOOL:${JSON_Diagnostic_Positions}>:JSON_DIAGNOSTIC_POSITIONS=1>
$<$<BOOL:${JSON_LegacyDiscardedValueComparison}>:JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON=1>
-14
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@@ -276,20 +276,6 @@ add_custom_target(ci_test_disableenumserialization
COMMENT "Compile and test with enum serialization disabled"
)
###############################################################################
# Disable conversion from a one-element tuple of a JSON reference.
###############################################################################
add_custom_target(ci_test_disabletuplereferenceconversion
COMMAND ${CMAKE_COMMAND}
-DCMAKE_BUILD_TYPE=Debug -GNinja
-DJSON_BuildTests=ON -DJSON_FastTests=ON -DJSON_DisableTupleReferenceConversion=ON
-S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion
COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion
COMMAND cd ${PROJECT_BINARY_DIR}/build_disabletuplereferenceconversion && ${CMAKE_CTEST_COMMAND} --parallel ${N} --output-on-failure
COMMENT "Compile and test with tuple reference conversion disabled"
)
###############################################################################
# Skip the multiple-inclusion library version check.
###############################################################################
-1
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@@ -207,7 +207,6 @@ INSERT INTO searchIndex(name, type, path) VALUES ('JSON_CATCH_USER', 'Macro', 'a
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTICS', 'Macro', 'api/macros/json_diagnostics/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DIAGNOSTIC_POSITIONS', 'Macro', 'api/macros/json_diagnostic_positions/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_ENUM_SERIALIZATION', 'Macro', 'api/macros/json_disable_enum_serialization/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_DISABLE_TUPLE_REFERENCE_CONVERSION', 'Macro', 'api/macros/json_disable_tuple_reference_conversion/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_11', 'Macro', 'api/macros/json_has_cpp_11/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_14', 'Macro', 'api/macros/json_has_cpp_11/index.html');
INSERT INTO searchIndex(name, type, path) VALUES ('JSON_HAS_CPP_17', 'Macro', 'api/macros/json_has_cpp_11/index.html');
@@ -159,8 +159,6 @@ basic_json(basic_json&& other) noexcept;
- `CompatibleType` is not `basic_json` (to avoid hijacking copy/move constructors),
- `CompatibleType` is not a different `basic_json` type (i.e. with different template arguments)
- `CompatibleType` is not a `basic_json` nested type (e.g., `json_pointer`, `iterator`, etc.)
- if [`JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../macros/json_disable_tuple_reference_conversion.md) is defined
to `1`: `CompatibleType` is not a one-element `std::tuple` holding a reference to `basic_json`
- `json_serializer<U>` (with `U = uncvref_t<CompatibleType>`) has a `to_json(basic_json_t&, CompatibleType&&)`
method
+2 -2
View File
@@ -80,8 +80,8 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
the end of the file was not reached when `strict` was set to true
- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from CBOR were
used in the given input or if the input is not valid CBOR
- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string was expected as a map key,
but not found
- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a map key is not a string (keys of other
types are not supported, as JSON object keys are always strings) or a string is malformed
## Complexity
@@ -73,8 +73,8 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
the end of the file was not reached when `strict` was set to true
- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from
MessagePack were used in the given input or if the input is not valid MessagePack
- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string was expected as a map key,
but not found
- Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a map key is not a string (keys of other
types are not supported, as JSON object keys are always strings) or a string is malformed
## Complexity
-1
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@@ -52,7 +52,6 @@ header. See also the [macro overview page](../../features/macros.md).
- [**JSON_BRACE_INIT_COPY_SEMANTICS**](json_brace_init_copy_semantics.md) - opt in to copy/move semantics for single-element brace initialization
- [**JSON_DISABLE_ENUM_SERIALIZATION**](json_disable_enum_serialization.md) - switch off default serialization/deserialization functions for enums
- [**JSON_DISABLE_TUPLE_REFERENCE_CONVERSION**](json_disable_tuple_reference_conversion.md) - switch off conversion from a one-element tuple of a JSON reference
- [**JSON_USE_IMPLICIT_CONVERSIONS**](json_use_implicit_conversions.md) - control implicit conversions
## Comparison behavior
@@ -1,114 +0,0 @@
# JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION /* value */
```
When defined to `1`, a `basic_json` value can no longer be constructed from a one-element `std::tuple` whose element is
a reference to that `basic_json` type, such as `std::tuple<json&>`, `std::tuple<const json&>`, or `std::tuple<json&&>`.
These are the tuples created by `std::forward_as_tuple(j)`.
## Default definition
The default value is `0` (disabled — existing behavior is preserved).
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 0
```
## Notes
!!! note "Background"
By default, `basic_json` can be constructed from any `std::tuple` whose elements can be converted to JSON; the result
is an array. This includes `std::tuple<json&>`, which becomes a one-element array.
`std::tuple` only converts another tuple element by element if its element type cannot be constructed from the whole
source tuple. Because `json` *can* be constructed from `std::tuple<json&>`, `std::tuple` instead converts the whole
tuple into a single `json` value. This has two surprising effects:
```cpp
json j = true;
// rejected by some standard libraries (e.g., libc++); with others, the
// reference binds to a temporary that is destroyed right away
std::tuple<const json&> t1(std::forward_as_tuple(j));
// compiles, but std::get<0>(t2) is [true], not true
std::tuple<json> t2(std::forward_as_tuple(j));
```
Enabling this macro removes the conversion, so both tuples are converted element by element: `std::get<0>(t1)`
refers to `j`, and `std::get<0>(t2)` is a copy of `j` (see [#2226](https://github.com/nlohmann/json/issues/2226)).
!!! warning "Opt-in only"
This macro must be defined **before** including `<nlohmann/json.hpp>`. Defining it after the include has no effect.
!!! note "Affected conversions"
Only one-element tuples holding a reference to the **same** `basic_json` type are affected. Constructing a JSON value
from them no longer compiles:
```cpp
json j = true;
json a = std::forward_as_tuple(j); // error with the macro enabled
json b = json::array({j}); // use this instead: [true]
```
Tuples holding a JSON value (`std::make_tuple(j)`), tuples with more than one element, and tuples holding references
to other types (including other `basic_json` specializations) are converted to arrays as before.
!!! hint "CMake option"
This behavior can also be controlled with the CMake option
[`JSON_DisableTupleReferenceConversion`](../../integration/cmake.md#json_disabletuplereferenceconversion)
(`OFF` by default) which defines `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION` accordingly.
## Examples
??? example "Default behavior (macro not defined)"
```cpp
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
json j = true;
std::tuple<json> t(std::forward_as_tuple(j));
// std::get<0>(t) is [true] -- the whole tuple was converted
}
```
??? example "Conversion disabled (macro defined to 1)"
```cpp
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 1
#include <nlohmann/json.hpp>
using json = nlohmann::json;
int main()
{
json j = true;
std::tuple<json> t(std::forward_as_tuple(j));
// std::get<0>(t) is true -- a copy of j
std::tuple<const json&> r(std::forward_as_tuple(j));
// std::get<0>(r) refers to j
}
```
## See also
- [**basic_json(CompatibleType&&)**](../basic_json/basic_json.md) - the affected constructor
- [:simple-cmake: JSON_DisableTupleReferenceConversion](../../integration/cmake.md#json_disabletuplereferenceconversion) -
CMake option to control the macro
## Version history
- Added in version 3.13.0.
@@ -174,7 +174,20 @@ The library maps CBOR types to JSON value types as follows:
!!! warning "Object keys"
CBOR allows map keys of any type, whereas JSON only allows strings as keys in object values. Therefore, CBOR maps with keys other than UTF-8 strings are rejected.
CBOR allows map keys of any type, whereas JSON only allows strings as keys in object values. Therefore, CBOR maps
with keys other than text strings (major type 3) are rejected with a
[`parse_error.113`](../../home/exceptions.md#jsonexceptionparse_error113) exception (or, with `allow_exceptions` set
to `false`, a discarded value) naming the type of the key that was found, for instance:
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found an unsigned integer; last byte: 0x01
```
This applies to the [SAX interface](../parsing/sax_interface.md) as well, as the key is read before it is passed
on. This is a deliberate restriction of the library's JSON value model, not an oversight: formats built on CBOR
maps with integer keys, such as COSE ([RFC 9052](https://www.rfc-editor.org/rfc/rfc9052.html)) or CWT
([RFC 8392](https://www.rfc-editor.org/rfc/rfc8392.html)), cannot be read with this library and need a
general-purpose CBOR library instead.
!!! warning "UTF-8 validation of text strings"
@@ -138,6 +138,21 @@ The library maps MessagePack types to JSON value types as follows:
Any MessagePack output created by `to_msgpack` can be successfully parsed by `from_msgpack`.
!!! warning "Object keys"
MessagePack allows map keys of any type, whereas JSON only allows strings as keys in object values. Like the
JSON-compatible [profile](https://github.com/msgpack/msgpack/blob/master/spec.md#profile) sketched in the
MessagePack specification, this library restricts map keys to `str` values. Maps with keys of any other type are
rejected with a [`parse_error.113`](../../home/exceptions.md#jsonexceptionparse_error113) exception (or, with
`allow_exceptions` set to `false`, a discarded value) naming the type of the key that was found, for instance:
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found nil; last byte: 0xC0
```
This applies to the [SAX interface](../parsing/sax_interface.md) as well, as the key is read before it is passed
on. Such input needs a general-purpose MessagePack library instead.
!!! warning "UTF-8 validation of string values"
The MessagePack specification requires `str` values (`fixstr`, `str 8`, `str 16`, `str 32`) to be valid UTF-8.
-7
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@@ -83,13 +83,6 @@ When defined, default parse and serialize functions for enums are excluded and h
See [full documentation of `JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md).
## `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`
When defined to `1`, a JSON value can no longer be created from a one-element `std::tuple` holding a reference to a JSON
value, such as the result of `std::forward_as_tuple(j)`. This lets `std::tuple` convert such tuples element-wise.
See [full documentation of `JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../api/macros/json_disable_tuple_reference_conversion.md).
## `JSON_NO_IO`
When defined, headers `<cstdio>`, `<ios>`, `<iosfwd>`, `<istream>`, and `<ostream>` are not included and parse functions
+9 -2
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@@ -343,13 +343,20 @@ A string could not be read from a [binary format](../features/binary_formats/ind
string was read where one was required (for instance as a map key), the string's length specification is invalid, or
the string's bytes are not valid UTF-8.
CBOR and MessagePack allow map keys of any type, but JSON object keys are always strings. Maps with keys of any other
type (for instance integers or `null`) are therefore not supported; see the notes on
[CBOR](../features/binary_formats/cbor.md) and [MessagePack](../features/binary_formats/messagepack.md).
!!! failure "Example messages"
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xFF
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found an unsigned integer; last byte: 0x01
```
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found nil; last byte: 0xC0
```
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x7C
```
```
[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing UBJSON char: byte after 'C' must be in range 0x00..0x7F; last byte: 0x82
-6
View File
@@ -169,12 +169,6 @@ Enable position diagnostics by defining macro [`JSON_DIAGNOSTIC_POSITIONS`](../a
Disable default `enum` serialization by defining the macro
[`JSON_DISABLE_ENUM_SERIALIZATION`](../api/macros/json_disable_enum_serialization.md). This option is `OFF` by default.
### `JSON_DisableTupleReferenceConversion`
Disable the conversion from a one-element `std::tuple` holding a reference to a JSON value by defining the macro
[`JSON_DISABLE_TUPLE_REFERENCE_CONVERSION`](../api/macros/json_disable_tuple_reference_conversion.md). This option is
`OFF` by default.
### `JSON_FastTests`
Skip expensive/slow test suites. This option is `OFF` by default. Depends on `JSON_BuildTests`.
-1
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@@ -284,7 +284,6 @@ nav:
- 'JSON_DIAGNOSTICS': api/macros/json_diagnostics.md
- 'JSON_DIAGNOSTIC_POSITIONS': api/macros/json_diagnostic_positions.md
- 'JSON_DISABLE_ENUM_SERIALIZATION': api/macros/json_disable_enum_serialization.md
- 'JSON_DISABLE_TUPLE_REFERENCE_CONVERSION': api/macros/json_disable_tuple_reference_conversion.md
- 'JSON_HAS_CPP_11, JSON_HAS_CPP_14, JSON_HAS_CPP_17, JSON_HAS_CPP_20': api/macros/json_has_cpp_11.md
- 'JSON_HAS_EXPERIMENTAL_FILESYSTEM, JSON_HAS_FILESYSTEM': api/macros/json_has_filesystem.md
- 'JSON_HAS_RANGES': api/macros/json_has_ranges.md
+168 -2
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@@ -1263,6 +1263,80 @@ class binary_reader
}
}
/*!
@brief reads a CBOR object key
RFC 8949 allows any data item as a map key, but only strings have a
counterpart in JSON. A key of any other type is rejected with a message
naming that type, rather than the one @ref get_cbor_string gives for a
malformed string.
@param[out] result created key
@return whether key creation completed
*/
bool get_cbor_object_key(string_t& result)
{
// EOF and major type 3 (text string) are left to get_cbor_string
if (current == char_traits<char_type>::eof() || (static_cast<unsigned int>(current) & 0xE0u) == 0x60u)
{
return get_cbor_string(result);
}
const char* found = nullptr;
switch (static_cast<unsigned int>(current) >> 5u)
{
case 0:
found = "an unsigned integer";
break;
case 1:
found = "a negative integer";
break;
case 2:
found = "a byte string";
break;
case 4:
found = "an array";
break;
case 5:
found = "a map";
break;
case 6:
found = "a tag";
break;
default: // major type 7
switch (current)
{
case 0xF4:
case 0xF5:
found = "a boolean";
break;
case 0xF6:
found = "null";
break;
case 0xF7:
found = "undefined";
break;
case 0xF9:
case 0xFA:
case 0xFB:
found = "a floating-point number";
break;
case 0xFF:
found = "a break stop code";
break;
default:
found = "a simple value";
break;
}
break;
}
auto last_token = get_token_string();
return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
exception_message(input_format_t::cbor, concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
}
/*!
@brief reads a definite-length CBOR byte array
@@ -1507,7 +1581,7 @@ class binary_reader
if (top.is_object)
{
key.clear();
if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
if (JSON_HEDLEY_UNLIKELY(!get_cbor_object_key(key) || !sax->key(key)))
{
return false;
}
@@ -2008,6 +2082,98 @@ class binary_reader
}
}
/*!
@brief reads a MessagePack object key
The MessagePack specification allows any type as a map key, but only
strings have a counterpart in JSON. A key of any other type is rejected
with a message naming that type, rather than the one @ref
get_msgpack_string gives for a malformed string.
@param[out] result created key
@return whether key creation completed
*/
bool get_msgpack_object_key(string_t& result)
{
const char* found = nullptr;
switch (current)
{
case 0xC0:
found = "nil";
break;
case 0xC2:
case 0xC3:
found = "a boolean";
break;
case 0xCA:
case 0xCB:
found = "a float";
break;
case 0xC4:
case 0xC5:
case 0xC6:
found = "a bin";
break;
case 0xC7:
case 0xC8:
case 0xC9:
case 0xD4:
case 0xD5:
case 0xD6:
case 0xD7:
case 0xD8:
found = "an ext";
break;
case 0xCC:
case 0xCD:
case 0xCE:
case 0xCF:
case 0xD0:
case 0xD1:
case 0xD2:
case 0xD3:
found = "an integer";
break;
case 0xDC:
case 0xDD:
found = "an array";
break;
case 0xDE:
case 0xDF:
found = "a map";
break;
default:
// fixint, fixmap, and fixarray; strings, EOF, and the unused
// byte 0xC1 are left to get_msgpack_string
if (current == char_traits<char_type>::eof())
{
return get_msgpack_string(result);
}
if (current <= 0x7F || current >= 0xE0)
{
found = "an integer";
}
else if (current <= 0x8F)
{
found = "a map";
}
else if (current <= 0x9F)
{
found = "an array";
}
else
{
return get_msgpack_string(result);
}
break;
}
auto last_token = get_token_string();
return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
exception_message(input_format_t::msgpack, concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
}
/*!
@brief reads a MessagePack byte array
@@ -2170,7 +2336,7 @@ class binary_reader
{
get();
key.clear();
if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
if (JSON_HEDLEY_UNLIKELY(!get_msgpack_object_key(key) || !sax->key(key)))
{
return false;
}
-4
View File
@@ -916,10 +916,6 @@ void templated_json_throw(ExceptionType exception)
#define JSON_DISABLE_ENUM_SERIALIZATION 0
#endif
#ifndef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 0
#endif
#ifndef JSON_USE_GLOBAL_UDLS
#define JSON_USE_GLOBAL_UDLS 1
#endif
@@ -25,7 +25,6 @@
#undef JSON_INLINE_VARIABLE
#undef JSON_NO_UNIQUE_ADDRESS
#undef JSON_DISABLE_ENUM_SERIALIZATION
#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#undef JSON_USE_GLOBAL_UDLS
#ifndef JSON_TEST_KEEP_MACROS
@@ -636,18 +636,6 @@ template<typename BasicJsonType, typename CompatibleType>
struct is_compatible_type
: is_compatible_type_impl<BasicJsonType, CompatibleType> {};
// a one-element std::tuple holding a reference to BasicJsonType, as created by
// std::forward_as_tuple(j); see JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple : std::false_type {};
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple<BasicJsonType, std::tuple<T>>
{
static constexpr bool value =
std::is_reference<T>::value && std::is_same<uncvref_t<T>, BasicJsonType>::value;
};
template<typename BasicJsonType, typename CompatibleArrayType>
struct is_compatible_binary_type
{
+1 -6
View File
@@ -1595,12 +1595,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
template < typename CompatibleType,
typename U = detail::uncvref_t<CompatibleType>,
detail::enable_if_t <
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value
#if JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
// see https://github.com/nlohmann/json/issues/2226
&& !detail::is_basic_json_reference_tuple<basic_json_t, U>::value
#endif
, int > = 0 >
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
std::forward<CompatibleType>(val))))
+169 -25
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@@ -3327,10 +3327,6 @@ void templated_json_throw(ExceptionType exception)
#define JSON_DISABLE_ENUM_SERIALIZATION 0
#endif
#ifndef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 0
#endif
#ifndef JSON_USE_GLOBAL_UDLS
#define JSON_USE_GLOBAL_UDLS 1
#endif
@@ -4650,18 +4646,6 @@ template<typename BasicJsonType, typename CompatibleType>
struct is_compatible_type
: is_compatible_type_impl<BasicJsonType, CompatibleType> {};
// a one-element std::tuple holding a reference to BasicJsonType, as created by
// std::forward_as_tuple(j); see JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple : std::false_type {};
template<typename BasicJsonType, typename T>
struct is_basic_json_reference_tuple<BasicJsonType, std::tuple<T>>
{
static constexpr bool value =
std::is_reference<T>::value && std::is_same<uncvref_t<T>, BasicJsonType>::value;
};
template<typename BasicJsonType, typename CompatibleArrayType>
struct is_compatible_binary_type
{
@@ -13976,6 +13960,80 @@ class binary_reader
}
}
/*!
@brief reads a CBOR object key
RFC 8949 allows any data item as a map key, but only strings have a
counterpart in JSON. A key of any other type is rejected with a message
naming that type, rather than the one @ref get_cbor_string gives for a
malformed string.
@param[out] result created key
@return whether key creation completed
*/
bool get_cbor_object_key(string_t& result)
{
// EOF and major type 3 (text string) are left to get_cbor_string
if (current == char_traits<char_type>::eof() || (static_cast<unsigned int>(current) & 0xE0u) == 0x60u)
{
return get_cbor_string(result);
}
const char* found = nullptr;
switch (static_cast<unsigned int>(current) >> 5u)
{
case 0:
found = "an unsigned integer";
break;
case 1:
found = "a negative integer";
break;
case 2:
found = "a byte string";
break;
case 4:
found = "an array";
break;
case 5:
found = "a map";
break;
case 6:
found = "a tag";
break;
default: // major type 7
switch (current)
{
case 0xF4:
case 0xF5:
found = "a boolean";
break;
case 0xF6:
found = "null";
break;
case 0xF7:
found = "undefined";
break;
case 0xF9:
case 0xFA:
case 0xFB:
found = "a floating-point number";
break;
case 0xFF:
found = "a break stop code";
break;
default:
found = "a simple value";
break;
}
break;
}
auto last_token = get_token_string();
return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
exception_message(input_format_t::cbor, concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
}
/*!
@brief reads a definite-length CBOR byte array
@@ -14220,7 +14278,7 @@ class binary_reader
if (top.is_object)
{
key.clear();
if (JSON_HEDLEY_UNLIKELY(!get_cbor_string(key) || !sax->key(key)))
if (JSON_HEDLEY_UNLIKELY(!get_cbor_object_key(key) || !sax->key(key)))
{
return false;
}
@@ -14721,6 +14779,98 @@ class binary_reader
}
}
/*!
@brief reads a MessagePack object key
The MessagePack specification allows any type as a map key, but only
strings have a counterpart in JSON. A key of any other type is rejected
with a message naming that type, rather than the one @ref
get_msgpack_string gives for a malformed string.
@param[out] result created key
@return whether key creation completed
*/
bool get_msgpack_object_key(string_t& result)
{
const char* found = nullptr;
switch (current)
{
case 0xC0:
found = "nil";
break;
case 0xC2:
case 0xC3:
found = "a boolean";
break;
case 0xCA:
case 0xCB:
found = "a float";
break;
case 0xC4:
case 0xC5:
case 0xC6:
found = "a bin";
break;
case 0xC7:
case 0xC8:
case 0xC9:
case 0xD4:
case 0xD5:
case 0xD6:
case 0xD7:
case 0xD8:
found = "an ext";
break;
case 0xCC:
case 0xCD:
case 0xCE:
case 0xCF:
case 0xD0:
case 0xD1:
case 0xD2:
case 0xD3:
found = "an integer";
break;
case 0xDC:
case 0xDD:
found = "an array";
break;
case 0xDE:
case 0xDF:
found = "a map";
break;
default:
// fixint, fixmap, and fixarray; strings, EOF, and the unused
// byte 0xC1 are left to get_msgpack_string
if (current == char_traits<char_type>::eof())
{
return get_msgpack_string(result);
}
if (current <= 0x7F || current >= 0xE0)
{
found = "an integer";
}
else if (current <= 0x8F)
{
found = "a map";
}
else if (current <= 0x9F)
{
found = "an array";
}
else
{
return get_msgpack_string(result);
}
break;
}
auto last_token = get_token_string();
return sax->parse_error(chars_read, last_token, parse_error::create(113, chars_read,
exception_message(input_format_t::msgpack, concat("only string keys are supported, but found ", found, "; last byte: 0x", last_token), "object key"), nullptr));
}
/*!
@brief reads a MessagePack byte array
@@ -14883,7 +15033,7 @@ class binary_reader
{
get();
key.clear();
if (JSON_HEDLEY_UNLIKELY(!get_msgpack_string(key) || !sax->key(key)))
if (JSON_HEDLEY_UNLIKELY(!get_msgpack_object_key(key) || !sax->key(key)))
{
return false;
}
@@ -26492,12 +26642,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
template < typename CompatibleType,
typename U = detail::uncvref_t<CompatibleType>,
detail::enable_if_t <
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value
#if JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
// see https://github.com/nlohmann/json/issues/2226
&& !detail::is_basic_json_reference_tuple<basic_json_t, U>::value
#endif
, int > = 0 >
!detail::is_basic_json<U>::value && detail::is_compatible_type<basic_json_t, U>::value, int > = 0 >
basic_json(CompatibleType && val) noexcept(noexcept( // NOLINT(bugprone-forwarding-reference-overload,bugprone-exception-escape)
JSONSerializer<U>::to_json(std::declval<basic_json_t&>(),
std::forward<CompatibleType>(val))))
@@ -31486,7 +31631,6 @@ struct formatter<nlohmann::NLOHMANN_BASIC_JSON_TPL, char> // NOLINT(cert-dcl58-c
#undef JSON_INLINE_VARIABLE
#undef JSON_NO_UNIQUE_ADDRESS
#undef JSON_DISABLE_ENUM_SERIALIZATION
#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#undef JSON_USE_GLOBAL_UDLS
#ifndef JSON_TEST_KEEP_MACROS
+43 -2
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@@ -1830,10 +1830,51 @@ TEST_CASE("CBOR")
SECTION("invalid string in map")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xa1, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xFF", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xa1, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found a break stop code; last byte: 0xFF", json::parse_error&);
CHECK(json::from_cbor(std::vector<uint8_t>({0xa1, 0xff, 0x01}), true, false).is_discarded());
}
SECTION("non-string key (see #2766 and #3381)")
{
// only text strings map to JSON object keys; any other key is
// rejected with a message naming its type
const std::vector<std::pair<std::vector<std::uint8_t>, std::string>> cases =
{
{{0xA1, 0x01, 0x01}, "an unsigned integer; last byte: 0x01"},
{{0xA1, 0x20, 0x01}, "a negative integer; last byte: 0x20"},
{{0xA1, 0x41, 0x61, 0x01}, "a byte string; last byte: 0x41"},
{{0xA1, 0x80, 0x01}, "an array; last byte: 0x80"},
{{0xA1, 0xA0, 0x01}, "a map; last byte: 0xA0"},
{{0xA1, 0xC0, 0x61, 0x61, 0x01}, "a tag; last byte: 0xC0"},
{{0xA1, 0xF4, 0x01}, "a boolean; last byte: 0xF4"},
{{0xA1, 0xF5, 0x01}, "a boolean; last byte: 0xF5"},
{{0xA1, 0xF6, 0x01}, "null; last byte: 0xF6"},
{{0xA1, 0xF7, 0x01}, "undefined; last byte: 0xF7"},
{{0xA1, 0xF9, 0x3C, 0x00, 0x01}, "a floating-point number; last byte: 0xF9"},
{{0xA1, 0xFA, 0x3F, 0x80, 0x00, 0x00, 0x01}, "a floating-point number; last byte: 0xFA"},
{{0xA1, 0xFB, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "a floating-point number; last byte: 0xFB"},
{{0xA1, 0xE0, 0x01}, "a simple value; last byte: 0xE0"},
{{0xA1, 0xF8, 0x20, 0x01}, "a simple value; last byte: 0xF8"},
// indefinite-length map
{{0xBF, 0x01, 0x01, 0xFF}, "an unsigned integer; last byte: 0x01"},
};
for (const auto& c : cases)
{
CAPTURE(c.first)
const std::string expected = "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found " + c.second;
json _;
CHECK_THROWS_WITH_AS(_ = json::from_cbor(c.first), expected.c_str(), json::parse_error&);
CHECK(json::from_cbor(c.first, true, false).is_discarded());
}
// a key of major type 3 with a reserved length is still reported as
// a malformed string, and a missing key as the end of input
json _;
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xA1})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing CBOR string: unexpected end of input", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xA1, 0x7C, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x7C", json::parse_error&);
}
SECTION("invalid UTF-8 in string (see #5529)")
{
// a two-character text string (major type 3) whose bytes are not
@@ -2284,7 +2325,7 @@ TEST_CASE("CBOR indefinite-length strings do not recurse per chunk")
SECTION("a break marker outside an indefinite-length string is not a string")
{
// 0xFF only closes a string that was opened; on its own it is not one
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xA1, 0xFF, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xFF", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(std::vector<uint8_t>({0xA1, 0xFF, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found a break stop code; last byte: 0xFF", json::parse_error&);
}
}
@@ -1,79 +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"
// This file tests the opt-in JSON_DISABLE_TUPLE_REFERENCE_CONVERSION, so it
// defines the macro itself rather than relying on a -D flag, and runs in every
// build.
#ifdef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#undef JSON_DISABLE_TUPLE_REFERENCE_CONVERSION
#endif
#define JSON_DISABLE_TUPLE_REFERENCE_CONVERSION 1
#include <nlohmann/json.hpp>
using nlohmann::json;
using nlohmann::ordered_json;
#include <string>
#include <tuple>
#include <type_traits>
#include <utility>
TEST_CASE("JSON_DISABLE_TUPLE_REFERENCE_CONVERSION")
{
SECTION("json is not constructible from a one-element tuple of a json reference")
{
CHECK_FALSE(std::is_constructible<json, std::tuple<json&>>::value);
CHECK_FALSE(std::is_constructible<json, std::tuple<const json&>>::value);
CHECK_FALSE(std::is_constructible < json, std::tuple < json && >>::value);
CHECK_FALSE(std::is_constructible<json, const std::tuple<json&>&>::value);
CHECK_FALSE(std::is_constructible<ordered_json, std::tuple<ordered_json&>>::value);
}
SECTION("issue #2226 - tuple<const json&> from tuple<json&> keeps the reference")
{
json j = true;
const std::tuple<const json&> tup(std::forward_as_tuple(j));
CHECK(&std::get<0>(tup) == &j);
}
SECTION("tuple<json> from tuple<json&> copies the element")
{
const json j = {{"key", "value"}};
const std::tuple<json> t1(std::forward_as_tuple(j));
CHECK(std::get<0>(t1) == j);
json j2 = "text";
const std::tuple<json> t2(std::forward_as_tuple(std::move(j2)));
CHECK(std::get<0>(t2) == "text");
}
SECTION("other tuple conversions are not affected")
{
const json j = true;
// one-element tuple holding a json value
CHECK(json(std::make_tuple(j)) == json::array({true}));
// tuples with more than one element, even when holding references
int i = 1;
CHECK(json(std::forward_as_tuple(i, j)) == json::array({1, true}));
CHECK(json(std::forward_as_tuple(j, j)) == json::array({true, true}));
// one-element tuples holding references to other types
std::string s = "text";
CHECK(json(std::forward_as_tuple(s)) == json::array({"text"}));
CHECK(json(std::forward_as_tuple(i)) == json::array({1}));
// a reference to a different basic_json specialization
ordered_json oj = true;
CHECK(json(std::forward_as_tuple(oj)) == json::array({true}));
}
}
+60 -1
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@@ -1551,10 +1551,69 @@ TEST_CASE("MessagePack")
SECTION("invalid string in map")
{
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xFF", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found an integer; last byte: 0xFF", json::parse_error&);
CHECK(json::from_msgpack(std::vector<uint8_t>({0x81, 0xff, 0x01}), true, false).is_discarded());
}
SECTION("non-string key (see #3381)")
{
// only strings map to JSON object keys; any other key is rejected
// with a message naming its type
const std::vector<std::pair<std::vector<std::uint8_t>, std::string>> cases =
{
{{0x81, 0xC0, 0x01}, "nil; last byte: 0xC0"},
{{0x81, 0xC2, 0x01}, "a boolean; last byte: 0xC2"},
{{0x81, 0xC3, 0x01}, "a boolean; last byte: 0xC3"},
{{0x81, 0xCA, 0x3F, 0x80, 0x00, 0x00, 0x01}, "a float; last byte: 0xCA"},
{{0x81, 0xCB, 0x3F, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "a float; last byte: 0xCB"},
{{0x81, 0xC4, 0x00, 0x01}, "a bin; last byte: 0xC4"},
{{0x81, 0xC5, 0x00, 0x00, 0x01}, "a bin; last byte: 0xC5"},
{{0x81, 0xC6, 0x00, 0x00, 0x00, 0x00, 0x01}, "a bin; last byte: 0xC6"},
{{0x81, 0xC7, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC7"},
{{0x81, 0xC8, 0x00, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC8"},
{{0x81, 0xC9, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an ext; last byte: 0xC9"},
{{0x81, 0xD4, 0x01, 0x00, 0x01}, "an ext; last byte: 0xD4"},
{{0x81, 0xD5, 0x01, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD5"},
{{0x81, 0xD6, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD6"},
{{0x81, 0xD7, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD7"},
{{0x81, 0xD8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}, "an ext; last byte: 0xD8"},
{{0x81, 0xCC, 0x01, 0x01}, "an integer; last byte: 0xCC"},
{{0x81, 0xCD, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCD"},
{{0x81, 0xCE, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCE"},
{{0x81, 0xCF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xCF"},
{{0x81, 0xD0, 0x01, 0x01}, "an integer; last byte: 0xD0"},
{{0x81, 0xD1, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD1"},
{{0x81, 0xD2, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD2"},
{{0x81, 0xD3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01}, "an integer; last byte: 0xD3"},
{{0x81, 0x00, 0x01}, "an integer; last byte: 0x00"},
{{0x81, 0x7F, 0x01}, "an integer; last byte: 0x7F"},
{{0x81, 0xE0, 0x01}, "an integer; last byte: 0xE0"},
{{0x81, 0x80, 0x01}, "a map; last byte: 0x80"},
{{0x81, 0x8F, 0x01}, "a map; last byte: 0x8F"},
{{0x81, 0xDE, 0x00, 0x00, 0x01}, "a map; last byte: 0xDE"},
{{0x81, 0xDF, 0x00, 0x00, 0x00, 0x00, 0x01}, "a map; last byte: 0xDF"},
{{0x81, 0x90, 0x01}, "an array; last byte: 0x90"},
{{0x81, 0x9F, 0x01}, "an array; last byte: 0x9F"},
{{0x81, 0xDC, 0x00, 0x00, 0x01}, "an array; last byte: 0xDC"},
{{0x81, 0xDD, 0x00, 0x00, 0x00, 0x00, 0x01}, "an array; last byte: 0xDD"},
};
for (const auto& c : cases)
{
CAPTURE(c.first)
const std::string expected = "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack object key: only string keys are supported, but found " + c.second;
json _;
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(c.first), expected.c_str(), json::parse_error&);
CHECK(json::from_msgpack(c.first, true, false).is_discarded());
}
json _;
// the unused byte 0xC1 is still reported as a malformed string
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81, 0xC1, 0x01})), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing MessagePack string: expected length specification (0xA0-0xBF, 0xD9-0xDB); last byte: 0xC1", json::parse_error&);
// a missing key is still reported as the end of input
CHECK_THROWS_WITH_AS(_ = json::from_msgpack(std::vector<uint8_t>({0x81})), "[json.exception.parse_error.110] parse error at byte 2: syntax error while parsing MessagePack string: unexpected end of input", json::parse_error&);
}
SECTION("invalid UTF-8 in string (see #5529)")
{
// a fixstr of length 2 (0xA0 | 2) whose bytes are not valid UTF-8
+3 -3
View File
@@ -1018,7 +1018,7 @@ TEST_CASE("regression tests 1")
};
json _;
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0x98", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec), "[json.exception.parse_error.113] parse error at byte 2: syntax error while parsing CBOR object key: only string keys are supported, but found an array; last byte: 0x98", json::parse_error&);
// related test case: nonempty UTF-8 string (indefinite length)
std::vector<uint8_t> const vec1 {0x7f, 0x61, 0x61};
@@ -1065,7 +1065,7 @@ TEST_CASE("regression tests 1")
};
json _;
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec1), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xB4", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec1), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR object key: only string keys are supported, but found a map; last byte: 0xB4", json::parse_error&);
// related test case: double-precision
std::vector<uint8_t> const vec2
@@ -1077,7 +1077,7 @@ TEST_CASE("regression tests 1")
0x96, 0x96, 0xb4, 0xb4, 0xfa, 0x94, 0x94, 0x61,
0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0x61, 0xfb
};
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR string: expected length specification (0x60-0x7B) or indefinite string type (0x7F); last byte: 0xB4", json::parse_error&);
CHECK_THROWS_WITH_AS(_ = json::from_cbor(vec2), "[json.exception.parse_error.113] parse error at byte 13: syntax error while parsing CBOR object key: only string keys are supported, but found a map; last byte: 0xB4", json::parse_error&);
}
SECTION("issue #452 - Heap-buffer-overflow (OSS-Fuzz issue 585)")
-18
View File
@@ -18,11 +18,6 @@
// for some reason including this after the json header leads to linker errors with VS 2017...
#include <locale>
// skip tests if JSON_DISABLE_TUPLE_REFERENCE_CONVERSION=1 (#2226)
#if defined(JSON_DISABLE_TUPLE_REFERENCE_CONVERSION) && (JSON_DISABLE_TUPLE_REFERENCE_CONVERSION == 1)
#define SKIP_TESTS_FOR_TUPLE_REFERENCE_CONVERSION
#endif
#define JSON_TESTS_PRIVATE
#include <nlohmann/json.hpp>
using json = nlohmann::json;
@@ -33,7 +28,6 @@ using ordered_json = nlohmann::ordered_json;
#include <cstdio>
#include <list>
#include <tuple>
#include <type_traits>
#include <utility>
@@ -547,18 +541,6 @@ TEST_CASE("regression tests 2")
)));
}
#ifndef SKIP_TESTS_FOR_TUPLE_REFERENCE_CONVERSION
SECTION("issue #2226 - std::tuple dangling reference - implicit conversion")
{
// by default, a one-element tuple holding a json reference converts to
// a one-element array; JSON_DISABLE_TUPLE_REFERENCE_CONVERSION removes
// this conversion (see unit-disable-tuple-reference-conversion.cpp)
const json j = true;
CHECK(std::is_constructible<json, std::tuple<const json&>>::value);
CHECK(json(std::forward_as_tuple(j)) == json::array({true}));
}
#endif
SECTION("PR #2181 - regression bug with lvalue")
{
// see https://github.com/nlohmann/json/pull/2181#issuecomment-653326060