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
foo(void * bar)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
func(char * cp1,char * cp2,char * cp3,char * cp4)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
func2(char * cp)31 func2 (char *cp)
32 {
33 return (cp != NULL) ? 1 : 0; /* { dg-warning "nonnull argument" "cp compared to NULL" { xfail c++ } } */
34 }
35