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

/* PR c++/28656 */
/* { dg-do compile } */
/* { dg-options "-Wnonnull" } */

#ifdef __cplusplus
extern "C" {
#endif
extern void *memcpy (void *__restrict, const void *__restrict, __SIZE_TYPE__)
  __attribute__((nonnull (1), nonnull (2), nonnull (1, 2), nonnull));
#ifdef __cplusplus
}
#endif

extern void bar (void *p1, void *p2, void *p3, void *p4, void *p5)
  __attribute__((nonnull (1), nonnull (1, 3), nonnull (3, 5), nonnull (4)));

void
foo (void)
{
  memcpy (0, 0, 0);
  /* { dg-warning "argument 1 null where non-null expected" "" { target *-*-* } .-1 } */
  /* { dg-warning "argument 2 null where non-null expected" "" { target *-*-* } .-2 } */

  bar (0, 0, 0, 0, 0);
  /* { dg-warning "argument 1 null where non-null expected" "" { target *-*-* } .-1 } */
  /* { dg-warning "argument 3 null where non-null expected" "" { target *-*-* } .-2 } */
  /* { dg-warning "argument 4 null where non-null expected" "" { target *-*-* } .-3 } */
  /* { dg-warning "argument 5 null where non-null expected" "" { target *-*-* } .-4 } */
}