1  /* Test for the bad usage of "nonnull" function attribute parms.  */
       2  /*  */
       3  /* { dg-do compile } */
       4  /* { dg-options "-Wnonnull-compare" } */
       5  
       6  #include <stddef.h>
       7  #include <stdlib.h>
       8  
       9  void foo(void *bar) __attribute__((nonnull(1)));
      10  
      11  void foo(void *bar) { if (!bar) abort(); } /* { dg-warning "'nonnull' argument" "bar compared to NULL" } */
      12  
      13  extern int func (char *, char *, char *, char *) __attribute__((nonnull));
      14  
      15  int
      16  func (char *cp1, char *cp2, char *cp3, char *cp4)
      17  {
      18    if (cp1) /* { dg-warning "'nonnull' argument" "cp1 compared to NULL" } */
      19      return 1;
      20  
      21    if (cp2 == NULL) /* { dg-warning "'nonnull' argument" "cp2 compared to NULL" } */
      22      return 2;
      23  
      24    if (NULL != cp3) /* { dg-warning "'nonnull' argument" "cp3 compared to NULL" } */
      25      return 3;
      26  
      27    return cp4 != 0 ? 0 : 1; /* { dg-warning "'nonnull' argument" "cp4 compared to NULL" } */
      28  }
      29  
      30  __attribute__((nonnull (1))) int
      31  func2 (char *cp)
      32  {
      33    return (cp != NULL) ? 1 : 0; /* { dg-warning "'nonnull' argument" "cp compared to NULL" } */
      34  }