1  /* PR c++/37561 */
       2  /* { dg-do compile } */
       3  
       4  __extension__ __INTPTR_TYPE__ p;
       5  char q;
       6  
       7  void
       8  foo ()
       9  {
      10    ((char *) p)++;	/* { dg-error "lvalue" } */
      11  
      12    ((char *) q)++;	/* { dg-error "lvalue" } */
      13    /* { dg-warning "cast to pointer from integer of different size" "" { target *-*-* } .-1 } */
      14  
      15    ((char *) p)--;	/* { dg-error "lvalue" } */
      16  
      17    ((char *) q)--;	/* { dg-error "lvalue" } */
      18    /* { dg-warning "cast to pointer from integer of different size" "" { target *-*-* } .-1 } */
      19  
      20    ++(char *) p;		/* { dg-error "lvalue" } */
      21  
      22    ++(char *) q;		/* { dg-error "lvalue" } */
      23    /* { dg-warning "cast to pointer from integer of different size" "" { target *-*-* } .-1 } */
      24  
      25    --(char *) p;		/* { dg-error "lvalue" } */
      26  
      27    --(char *) q;		/* { dg-error "lvalue" } */
      28    /* { dg-warning "cast to pointer from integer of different size" "" { target *-*-* } .-1 } */
      29  }
      30