gcc/testsuite/gcc.dg/pr37561.c

   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