[PATCH] D29464: [MinGWToolChain] Don't use GCC headers on Win32

[Mateusz Mikuła via Phabricator via cfe-commits]

mati865 added a comment.

I know why mingw-w64 limits.h weren't used (check first comment).
At first I was using this hack:

  diff -urN clang.orig/3.9.0/include/limits.h clang/3.9.0/include/limits.h
  --- clang.orig/3.9.0/include/limits.h	2016-09-26 22:29:13.496441000 +0200
  +++ clang/3.9.0/include/limits.h	2016-09-26 22:29:34.189625100 +0200
  @@ -28,7 +28,7 @@
   /* The system's limits.h may, in turn, try to #include_next GCC's limits.h.
      Avert this #include_next madness. */
   #if defined __GNUC__ && !defined _GCC_LIMITS_H_
  -#define _GCC_LIMITS_H_
  +#define _LIMITS_H___
   #endif
   
   /* System headers include a number of constants from POSIX in <limits.h>.

It was working (for limiths.h at least) but disabling usage of GCC includes made it behaving more like on Linux.
And since quadmath.h doesn't work on Linux with Clang I don't see issue.


https://reviews.llvm.org/D29464