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Add JSON_HEDLEY_WARN_UNUSED_RESULT to the current accept() overloads

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accept() is a pure query whose only effect is the returned bool; both
parse() overloads and the deprecated accept(span_input_adapter&&, ...)
overload already carry JSON_HEDLEY_WARN_UNUSED_RESULT, but the two
current, recommended accept() overloads were missing it. Add the
annotation to match, so discarding accept()'s result now warns under
-Wunused-result / [[nodiscard]], as it already does for parse().

Fixes #5407

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-05 20:40:48 +02:00
parent 09b6b6b5ba
commit ae6f737976
2 changed files with 4 additions and 0 deletions
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include/nlohmann/json.hpp
+2
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@@ -4129,6 +4129,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
/// @brief check if the input is valid JSON
/// @sa https://json.nlohmann.me/api/basic_json/accept/
template<typename InputType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static bool accept(InputType&& i,
const bool ignore_comments = false,
const bool ignore_trailing_commas = false)
@@ -4140,6 +4141,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
/// @sa https://json.nlohmann.me/api/basic_json/accept/
template<typename IteratorType, typename SentinelType = IteratorType,
detail::enable_if_t<detail::can_compare_ne<IteratorType, SentinelType>::value, int> = 0>
JSON_HEDLEY_WARN_UNUSED_RESULT
static bool accept(IteratorType first, SentinelType last,
const bool ignore_comments = false,
const bool ignore_trailing_commas = false)
single_include/nlohmann/json.hpp
+2
View File
@@ -25557,6 +25557,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
/// @brief check if the input is valid JSON
/// @sa https://json.nlohmann.me/api/basic_json/accept/
template<typename InputType>
JSON_HEDLEY_WARN_UNUSED_RESULT
static bool accept(InputType&& i,
const bool ignore_comments = false,
const bool ignore_trailing_commas = false)
@@ -25568,6 +25569,7 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
/// @sa https://json.nlohmann.me/api/basic_json/accept/
template<typename IteratorType, typename SentinelType = IteratorType,
detail::enable_if_t<detail::can_compare_ne<IteratorType, SentinelType>::value, int> = 0>
JSON_HEDLEY_WARN_UNUSED_RESULT
static bool accept(IteratorType first, SentinelType last,
const bool ignore_comments = false,
const bool ignore_trailing_commas = false)