gcc/testsuite/gcc.c-torture/execute/931102-2.c

   1 /* { dg-additional-options "-std=gnu89" } */
   2
   3 typedef union
   4 {
   5   long align;
   6   struct
   7     {
   8       short h, l;
   9     } b;
  10 } T;
  11
  12 f (x)
  13      int x;
  14 {
  15   int num = 0;
  16   T reg;
  17
  18   reg.b.l = x;
  19   while ((reg.b.l & 1) == 0)
  20     {
  21       num++;
  22       reg.b.l >>= 1;
  23     }
  24   return num;
  25 }
  26
  27 main ()
  28 {
  29   if (f (2) != 1)
  30     abort ();
  31   exit (0);
  32 }
  33