[llvm-bugs] [Bug 43642] New: Incompatibility with mingw-w64 intrinsic headers

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Oct 10 15:26:48 PDT 2019


            Bug ID: 43642
           Summary: Incompatibility with mingw-w64 intrinsic headers
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Headers
          Assignee: unassignedclangbugs at nondot.org
          Reporter: re.mcclue at gmail.com
                CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Created attachment 22652
  --> https://bugs.llvm.org/attachment.cgi?id=22652&action=edit
windows cmd error output screenshot

I have downloaded and installed clang 9.0 on windows 10 from
http://releases.llvm.org/download.html and mingw 8.1 from

I tried to compile sdl 2.0.10 with clang + mingw. I obtained an error relating
to intrin.h/xsaveintrin.h. Specifically:

  function cannot return function type 'int (unsigned int)'
unsigned __int64 _xgetbv(unsigned int);

  note: expanded from macro 'xgetbv'
#define _xgetbv(A) __builtin_ia32_xgetbv((long long)(A))

I was able to compile successfully with llvm 8.0, so I assume it is a problem
on the llvm end rather than sdl2.

Please view attachment for a detailed screenshot of windows cmd error output.

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