1  /* PR c++/55095 */
       2  /* { dg-do compile { target int32 } } */
       3  /* { dg-options "-O -Wshift-overflow=2" } */
       4  
       5  #define INTM1 (sizeof (int) * __CHAR_BIT__ - 1)
       6  #define LLONGM1 (sizeof (long long) * __CHAR_BIT__ - 1)
       7  
       8  int i1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" "" { target { c || c++11_down } } } */
       9  unsigned u1 = 1 << INTM1; /* { dg-warning "requires 33 bits to represent" "" { target { c || c++11_down } } } */
      10  long long int l1 = 1LL << LLONGM1; /* { dg-warning "requires 65 bits to represent" "" { target { c || c++11_down } } } */