[Bug c/46889] New: Missing diagnosis on duplicate struct member with anonymous union

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46889

           Summary: Missing diagnosis on duplicate struct member with
                    anonymous union
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: hjl.to...@gmail.com


[...@gnu-35 delta]$ cat foo.c
struct foo {
#ifdef BAD
 int x;
#endif
 union {
  struct {
   unsigned long time_stamp;
  };
  struct {
   int *page;
  };
 };
 int *page;
};

int *
bar (struct foo *x)
{
  return x->page;
}
[...@gnu-35 delta]$ /usr/gcc-4.6/bin/gcc -S -O2 foo.c
[...@gnu-35 delta]$ /usr/gcc-4.6/bin/gcc -S -O2 foo.c -DBAD
foo.c:13:7: error: duplicate member ‘page’
[...@gnu-35 delta]$