https://bugs.llvm.org/show_bug.cgi?id=52144
Bug ID: 52144
Summary: Clang on Windows: MSVC compatibility: values of
__STDC__ do not match between Clang and MSVC
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Sample code (t980.c):
#include <stdio.h>
int main()
{
#ifdef __STDC__
printf("__STDC__ is defined to %d\n", __STDC__);
#else
printf("__STDC__ is not defined\n");
#endif
return 0;
}
Invocations:
$ cl t980.c /std:c11 /Za && ./t980.exe
__STDC__ is defined to 1
$ clang t980.c --std=c11 -pedantic -Wall -Wextra && ./a.exe
__STDC__ is not defined
Here we see that values of __STDC__ do not match between Clang and MSVC. I.e.
there is no MSVC compatibility w.r.t. __STDC__. Why? Unexpected.
Tool versions:
$ cl
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30133 for x64
$ clang --version
clang version 12.0.0
Target: x86_64-pc-windows-msvc
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
