gcc/testsuite/gcc.dg/pr103406.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 #define HUGE __DBL_MAX__
   5 #define INF (HUGE + HUGE)
   6 #define NAN (INF - INF)
   7
   8 double foo() {
   9   double x = -NAN;
  10   double y = NAN;
  11   return x + y;
  12 }
  13
  14 /* { dg-final { scan-tree-dump-not "return 0\.0" "optimized" } } */