gcc/testsuite/gcc.dg/pr54676.c

   1 /* PR tree-optimization/54676 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -fno-tree-ccp -fno-tree-copy-prop -fno-tree-fre -ftree-vrp" } */
   4
   5 struct S
   6 {
   7   int s:1;
   8 };
   9
  10 struct S bar (void);
  11
  12 #if __SIZEOF_INT__ < 4
  13 #define int __INT32_TYPE__
  14 #endif
  15
  16 int a;
  17
  18 void
  19 foo (int x)
  20 {
  21   struct S s = bar ();
  22   while (!a)
  23     {
  24       int l = 94967295;
  25       a = x || (s.s &= l);
  26     }
  27 }