[clang] stdatomic.h compatible problem with MSVC headers

[Inori]

I'm using clang-cl within visual studio.
stdatomic.h from clang is conflict with MSVC's atomic header.

Code:

#include <cstdio>
#include <atomic>
#include <stdatomic.h>

int main(int argc, char* argv[]) 
{
	getchar();
	return 0;
}

Error message:

1>In file included from Source.cpp:3:
1>D:\LLVM\lib\clang\14.0.0\include\stdatomic.h(70,6): error : conflicting types for 'atomic_thread_fence'
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\include\atomic(250,24): message : previous definition is here
1>In file included from Source.cpp:3:
1>D:\LLVM\lib\clang\14.0.0\include\stdatomic.h(71,6): error : conflicting types for 'atomic_signal_fence'
1>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\include\atomic(276,24): message : previous definition is here

Clang Version: 14.0.0

It seems the latest code on main branch is the same as version 14.0.0

[jeffzhou2000]

I also meet the same issue, could i know how to fix it properly? thanks

[AaronBallman]

I cannot reproduce the issue with Clang trunk; can you try with the latest Clang and see if the issue still reproduces for you with the latest Clang? If it does, what command line were you using?

[jeffzhou2000]

this issue has fixed with a customized toolchain:https://github.com/mstorsjo/llvm-mingw/releases. I'm focus on an Android project now and I'll report related issue on Windows again in the future.