gcc/testsuite/gcc.dg/pr20054.c

   1
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fno-strict-aliasing" } */
   4
   5
   6 unsigned int *foo (void);
   7
   8 char *
   9 bar (double *d)
  10 {
  11   return (char *) (d + 1) - sizeof (unsigned int);
  12 }
  13
  14 char
  15 baz (double x)
  16 {
  17   unsigned int h = *foo ();
  18   unsigned int l = *(unsigned int *) bar (&x);
  19
  20   return (h & ~0x80000000L) == 0x7FF00000 && l == 0;
  21 }
  22
  23