1  /* PR optimization/11210 */
       2  /* Originator: Guido Classen <guido@clagi.de> */
       3  /* Reduced testcase by Falk Hueffner <falk@debian.org> */
       4  /* { dg-do compile } */
       5  /* { dg-options "-O" } */
       6  
       7  /* Verify that the constant expressions folder doesn't
       8     throw away the cast operation in the comparison.  */
       9  
      10  struct str { 
      11    int head; 
      12    signed char data[8];
      13  };
      14  
      15  int foo(struct str t)
      16  {
      17    return t.data[0] || (unsigned char) t.data[2] != 130; /* { dg-bogus "comparison is always 1" } */
      18  }