[Bug c/82695] New: gnu gcc (4.8 - 7.1) cannot parse some system headers in macOS (10.12)

[drikosev at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82695

            Bug ID: 82695
           Summary: gnu gcc  (4.8 - 7.1) cannot parse some system headers
                    in macOS (10.12)
           Product: gcc
           Version: 4.8.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: drikosev at gmail dot com
  Target Milestone: ---

Hi,

gnu gcc cannot parse some system headers in macOS (10.12)
. One bug is this:

$ cat framework-1.c
#include <Carbon/Carbon.h>
int main(){
 return 0;
}
$ gcc framework-1.c
In file included from
/System/Library/Frameworks/CoreGraphics.framework/Headers/CGContext.h:18:0,
                 from
/System/Library/Frameworks/CoreGraphics.framework/Headers/CGBitmapContext.h:9,
                 from
/System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:11,
                 from
/System/Library/Frameworks/ApplicationServices.framework/Headers/ApplicationServices.h:35,
                 from
/System/Library/Frameworks/Carbon.framework/Headers/Carbon.h:24,
                 from framework-1.c:1:
/System/Library/Frameworks/CoreGraphics.framework/Headers/CGFont.h:53:1:
error:initializer element is not constant
 static const CGFontIndex kCGGlyphMax = kCGFontIndexMax;


The error is issued in gcc/c/c-typeck.c by the following fragment (7 lines):
      else if (require_constant
               && !initializer_constant_valid_p (inside_init,
                                                 TREE_TYPE (inside_init)))
        {
          error_init ("initializer element is not constant");
          inside_init = error_mark_node;
        }

Is there a workaround that would allow gcc to accept such an initialisation? 


Ev. Drikos