Description of problem:
Header gnu/stubs-32.h is missing on x86_64

Version-Release number of selected component (if applicable):
glibc-headers-2.13-1.x86_64
glibc-devel-2.13-1.x86_64

How reproducible:
Always

Steps to Reproduce:
$ cat hello.c && gcc -m32 f2Mul.c
#include <stdio.h>

int main() {
  printf( "Hello world!\n" );
  return 0;
}
In file included from /usr/include/features.h:386:0,
                 from /usr/include/assert.h:37,
                 from f2Mul.c:1:
/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
compilation terminated.

Actual results:
No such file error

Expected results:
Success

Additional info:
gcc -m32 doesn't work.
Also, gcc-core tarball doesn't build.