[MSVC] QGroundcontrol failed to build with msvc due to error C2666 on Windows with /c++latest compile option

[Zhaojun-Liu]

Expected Behavior

Build with msvc successfully.

Current Behavior

F:\gitP\mavlink\qgroundcontrol\libs\libevents\libevents\libs\cpp\parse\parser.cpp(634): error C2666: 'nlohmann::detail::iter_impl<const nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,nlohmann::adl_serializer,std::vector<uint8_t,std::allocator<uint8_t>>>>::operator !=': overloaded functions have similar conversions

Steps to Reproduce:

Please provide an unambiguous set of steps to reproduce the current behavior

1. git clone https://github.com/mavlink/qgroundcontrol F:\gitP\mavlink\qgroundcontrol
2. git -C "F:\gitP\mavlink\qgroundcontrol" fetch --recurse-submodules=no --force
3. git -C "F:\gitP\mavlink\qgroundcontrol" reset --hard 9c77d15 (currently the latest commit)
4. git -C "F:\gitP\mavlink\qgroundcontrol" submodule sync
5. git -C "F:\gitP\mavlink\qgroundcontrol" submodule update --init --recursive
6. set CL= /std:c++latest
7. mkdir F:\gitP\mavlink\qgroundcontrol\build_amd64 and cd F:\gitP\mavlink\qgroundcontrol\build_amd64
8. set related Path (in my test environment like below):
   8.1 set PATH=F:\tools\qt5\qt\5_15_2\msvc2019_64\bin;F:\tools\jom_1_1_2;%PATH%
9. qmake -r ../qgroundcontrol.pro
10. set CL=%CL% /wd5055 /D_HAS_DEPRECATED_RESULT_OF=1 /D_SILENCE_CXX17_RESULT_OF_DEPRECATION_WARNING
11. jom /U

System Information

When posting bug reports, include the following information

• Operating System: Windows Server 2022 Datacenter 21H2
• VS version: VS2019 16.11.20

Detailed Description

Recently, we updated the commit of Qgroundcontrol for MSVC RWC testing, it built failed due to error C2666 with compile option /c++latest like below:
F:\gitP\mavlink\qgroundcontrol\libs\libevents\libevents\libs\cpp\parse\parser.cpp(634): error C2666: 'nlohmann::detail::iter_impl<const nlohmann::basic_json<std::map,std::vector,std::string,bool,int64_t,uint64_t,double,std::allocator,nlohmann::adl_serializer,std::vector<uint8_t,std::allocator<uint8_t>>>>::operator !=': overloaded functions have similar conversions

Log Files and Screenshots

detailed log files:
build (3).log

[Zhaojun-Liu]

Any updates of this issue? Thanks.

[HTRamsey]

You can compile without treating warnings as errors