gcc/testsuite/gcc.dg/pr52132.c

   1 /* PR debug/52132 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c99 -O2 -g" } */
   4
   5 #if  (__SIZEOF_INT__ < __SIZEOF_FLOAT__) \
   6   && (__SIZEOF_LONG__ == __SIZEOF_FLOAT__)
   7 #define int long
   8 #endif
   9
  10 int l;
  11 void bar (void);
  12
  13 void
  14 foo (int *x, float y)
  15 {
  16   float b;
  17   union { float f; int i; } u = { .f = y };
  18 #if  (__SIZEOF_INT__ < __SIZEOF_FLOAT__)
  19   u.i += 127L << 23;
  20 #else
  21   u.i += 127 << 23;
  22 #endif
  23   u.f = ((-1.0f / 3) * u.f + 2) * u.f - 2.0f / 3;
  24   b = 0.5 * (u.f + l);
  25   if (b >= *x)
  26     bar ();
  27 }