gcc/testsuite/gcc.dg/pr40971.c

   1 /* PR target/40971 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -fstack-protector -fno-strict-aliasing" } */
   4 /* { dg-require-effective-target fstack_protector } */
   5
   6 extern void bar (char *);
   7
   8 void
   9 foo (int f, long a)
  10 {
  11   {
  12     char d[32768];
  13     bar (d);
  14   }
  15   double b = f;
  16   while (a)
  17     {
  18       char c[sizeof (double)];
  19       __builtin_memcpy (c, &b, sizeof (c));
  20       if (*(double *) c != 2.0)
  21         break;
  22     }
  23 }