gcc/testsuite/c-c++-common/pr28656.c

   1 /* PR c++/28656 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wnonnull" } */
   4
   5 #ifdef __cplusplus
   6 extern "C" {
   7 #endif
   8 extern void *memcpy (void *__restrict, const void *__restrict, __SIZE_TYPE__)
   9   __attribute__((nonnull (1), nonnull (2), nonnull (1, 2), nonnull));
  10 #ifdef __cplusplus
  11 }
  12 #endif
  13
  14 extern void bar (void *p1, void *p2, void *p3, void *p4, void *p5)
  15   __attribute__((nonnull (1), nonnull (1, 3), nonnull (3, 5), nonnull (4)));
  16
  17 void
  18 foo (void)
  19 {
  20   memcpy (0, 0, 0);
  21   /* { dg-warning "argument 1 null where non-null expected" "" { target *-*-* } .-1 } */
  22   /* { dg-warning "argument 2 null where non-null expected" "" { target *-*-* } .-2 } */
  23
  24   bar (0, 0, 0, 0, 0);
  25   /* { dg-warning "argument 1 null where non-null expected" "" { target *-*-* } .-1 } */
  26   /* { dg-warning "argument 3 null where non-null expected" "" { target *-*-* } .-2 } */
  27   /* { dg-warning "argument 4 null where non-null expected" "" { target *-*-* } .-3 } */
  28   /* { dg-warning "argument 5 null where non-null expected" "" { target *-*-* } .-4 } */
  29 }