1  /* PR c/81417 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wsign-compare" } */
       4  
       5  int
       6  fn1 (signed int a, unsigned int b)
       7  {
       8    return a < b; /* { dg-warning "comparison of integer expressions of different signedness: 'int' and 'unsigned int'" } */
       9  }
      10  
      11  int
      12  fn2 (signed int a, unsigned int b)
      13  {
      14    return b < a; /* { dg-warning "comparison of integer expressions of different signedness: 'unsigned int' and 'int'" } */
      15  }
      16  
      17  int
      18  fn3 (signed long int a, unsigned long int b)
      19  {
      20    return b < a; /* { dg-warning "comparison of integer expressions of different signedness: 'long unsigned int' and 'long int'" } */
      21  }
      22  
      23  int
      24  fn4 (signed short int a, unsigned int b)
      25  {
      26    return b < a; /* { dg-warning "comparison of integer expressions of different signedness: 'unsigned int' and 'short int'" } */
      27  }
      28  
      29  int
      30  fn5 (unsigned int a, signed int b)
      31  {
      32    return a < b; /* { dg-warning "comparison of integer expressions of different signedness: 'unsigned int' and 'int'" } */
      33  }