gcc/testsuite/gcc.dg/pr46893.c

   1 /* PR debug/46893 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -g" } */
   4
   5 void
   6 foo (void)
   7 {
   8   union { unsigned long long l; double d; } u = { 0x7ff0000000000000ULL };
   9   double v = 0, w = -u.d;
  10
  11   if (w)
  12     w = v;
  13 }