Crash when construct a new json object

Question

Crash when construct a new json object

YueLu0116 opened this issue 2 months ago · comments

Description

lib version: 3.11.2
platform: Windows 10

Samlpe codes:

void Report(const nlohmann::json& jsonCategory, const nlohmann::json& jsonExtra)
{
	// do some other things

	std::string strAid{ "19960116" };

	nlohmann::json jsonContent{   // crash from here
		{"aid", strAid},
		{"category", jsonCategory},
		{"extra", jsonExtra}
	};

	// ...
}

jsonCategory and jsonExtra is passed from outside. And I got the following dump stacks (very long):

Call Site
MyServer!std::_String_val<std::_Simple_types<char> >::_Large_string_engaged [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xstring @ 2286] 
MyServer!std::_String_val<std::_Simple_types<char> >::_Myptr [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xstring @ 2273] 
MyServer!std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Construct_lv_contents [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xstring @ 2888] 
MyServer!std::basic_string<char,std::char_traits<char>,std::allocator<char> >::basic_string<char,std::char_traits<char>,std::allocator<char> >+0x22 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xstring @ 2420] 
MyServer!std::_Default_allocator_traits<std::allocator<std::basic_string<char,std::char_traits<char>,std::allocator<char> > > >::construct+0xb [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 674] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::create+0x24 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 388] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::json_value::{ctor}+0x24 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 525] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >+0x20c [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 1156] 
MyServer!std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > >::{ctor}+0x1a [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\utility @ 205] 
MyServer!std::_Default_allocator_traits<std::allocator<std::_Tree_node<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > >,void *> > >::construct+0x1a [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 674] 
MyServer!std::_Tree_node<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > >,void *>::_Buynode+0x43 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 359] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Buynode+0x43 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1923] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_or_move+0x43 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1637] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_nodes<std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_tag>+0x7b [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1658] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_nodes<std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_tag>+0xbe [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1666] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_nodes<std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_tag>+0xbe [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1666] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_nodes<std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy_tag>+0xbe [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1666] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::_Copy+0x17 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 1624] 
MyServer!std::_Tree<std::_Tmap_traits<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >,0> >::{ctor}+0x44 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xtree @ 900] 
MyServer!std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > > >::{ctor}+0x44 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\map @ 109] 
MyServer!std::_Default_allocator_traits<std::allocator<std::map<std::basic_string<char,std::char_traits<char>,std::allocator<char> >,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::less<void>,std::allocator<std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char> > const ,nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > > > > >::construct+0x44 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 674] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::create+0x5d [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 388] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::json_value::{ctor}+0x5d [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 531] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >+0xbf [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 1144] 
MyServer!nlohmann::json_abi_v3_11_2::detail::json_ref<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > >::moved_or_copied+0x26 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\detail\json_ref.hpp @ 59] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::{ctor}+0x26 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 1130] 
MyServer!std::_Default_allocator_traits<std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >::construct+0x26 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 674] 
MyServer!std::_Uninitialized_backout_al<std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >::_Emplace_back+0x26 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 1620] 
MyServer!std::_Uninitialized_copy+0x35 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 1659] 
MyServer!std::vector<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >::_Ucopy+0x35 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\vector @ 1641] 
MyServer!std::vector<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >::_Range_construct_or_tidy+0x9b [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\vector @ 517] 
MyServer!std::vector<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > >::{ctor}+0xa9 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\vector @ 529] 
MyServer!std::_Default_allocator_traits<std::allocator<std::vector<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >,std::allocator<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > > > > >::construct+0xa9 [C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.29.30133\include\xmemory @ 674] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::create+0xc2 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 388] 
MyServer!nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > >+0x326 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\json.hpp @ 938] 
MyServer!nlohmann::json_abi_v3_11_2::detail::json_ref<nlohmann::json_abi_v3_11_2::basic_json<std::map,std::vector,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,bool,__int64,unsigned __int64,double,std::allocator,nlohmann::json_abi_v3_11_2::adl_serializer,std::vector<unsigned char,std::allocator<unsigned char> > > >::{ctor}+0x35 [D:\project\MyServer\vcpkg_installed\x64-windows\x64-windows\include\nlohmann\detail\json_ref.hpp @ 36]

Reproduction steps

I post sample codes above. The call stack is very long. Don't known what exactly happened. :(

Expected vs. actual results

Don't crash maybe? I just wonder know under which situation can the crash happen in the json constructor.

Minimal code example

No response

Error messages

No response

Compiler and operating system

windows 10 & msvc 2022

Library version

3.11.2

Validation

The bug also occurs if the latest version from the develop branch is used.
I can successfully compile and run the unit tests.

Niels Lohmann · Answer 1 · Wed Mar 27 2024 00:10:16 GMT+0800 (China Standard Time)

I need more information. Are the references still valid when you call the constructor?