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  }