Repository Issue Activity (beta)

#4320 Behavioral change of serializers in 3.11.3. Name lookup related.

#5210 Mixed comparison bug: number_unsigned (INT64_MAX+1~UINT64_MAX) vs number_integer

#4825 Template instantiation of nlohmann::basic_json<> fails on C++17

#4261 Cannot use std::format on nholman::json objects

#4197 use of overloaded operator '<=>' is ambiguous

#4819 gcc 14.2 bug: array subscript out of bounds with `JSON_DIAGNOSTICS`

#4292 Rel 3.11.2 -- patch method throw exception which use to work fine in Rel 3.9.1

#4103 warning on at(nlohmann::json_pointer)

#4974 [MSVC][build] JSON failed with error C2672: 'nlohmann::json_abi_v3_12_0::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,

#5012 error_handler_t::ignore documentation is incorrect

#4354 (official) example for parsing "custom data source" (implementing input iterator) does not compile

#5002 VS2026 Insiders, C2678 With C++23 Modules

#4440 Assert when using std::views::filter and GCC 10

#4051 compiler error using clang-16.0.5 when using gcc-13.1 standard library

#4755 Fix cppcheck 1.5.1 warning

#4996 Tests don't build with VS 2026

#5206 from_json - Type conversions without range clamping cause UBSan warnings

#2226 std::tuple dangling reference - implicit conversion

#5198 TOCTOU race between lexer construction and locale changes causes float truncation

#5197 MSVC std c++23 u8string can not be correctly stored in json

#4813 json::update() with merge_objects==true may trigger JSON_ASSERT for some objects

#4552 UTF-8 invalid characters are not always ignored when dumping with error_handler_t::ignore

#4864 C++17 std::optional feature not enabled

#3578 Unable to use gnu mpz types for NumberIntegerType

#3859 .value() with optional default value fails to compile