[Bug 39580] New: error using va_start() macro

https://bugs.winehq.org/show_bug.cgi?id=39580

Bug ID: 39580
           Summary: error using va_start() macro
           Product: Wine
           Version: 1.7.54
          Hardware: x86
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: build-env
          Assignee: [e-mail]
          Reporter: [e-mail]

Clang-3.8 can't continue
~~~
/Users/sergey/ProjectsML/wine-sherry/dlls/avifil32/api.c:2303:5: error:
'va_start' used in Win64 ABI function
    va_start(vl, lpOptions);
    ^
/Users/sergey/src/llvm-build/Release/bin/../lib/clang/3.8.0/include/stdarg.h:33:29:
note: expanded from macro
      'va_start'
#define va_start(ap, param) __builtin_va_start(ap, param)
                            ^
/Users/sergey/ProjectsML/wine-sherry/dlls/avifil32/api.c:2346:5: error:
'va_start' used in Win64 ABI function
    va_start(vl, lpOptions);
    ^
/Users/sergey/src/llvm-build/Release/bin/../lib/clang/3.8.0/include/stdarg.h:33:29:
note: expanded from macro
      'va_start'
#define va_start(ap, param) __builtin_va_start(ap, param)
                            ^
2 errors generated.
make[1]: *** [api.o] Error 1
make[1]: *** Waiting for unfinished jobs....