1 /* Test for some aspects of null format string handling. */
2 /* Origin: Jason Thorpe <thorpej@wasabisystems.com> */
3 /* { dg-do compile } */
4 /* { dg-options "-std=gnu99 -Wformat" } */
5
6 #include "format.h"
7
8 extern void my_printf (const char *, ...) __attribute__((format(printf,1,2)));
9 extern const char *my_format (const char *, const char *)
10 __attribute__((format_arg(2)));
11
12 void
foo(int i1)13 foo (int i1)
14 {
15 /* Warning about a null format string has been decoupled from the actual
16 format check. However, we still expect to be warned about any excess
17 arguments after a null format string. */
18 my_printf (NULL);
19 my_printf (NULL, i1); /* { dg-warning "too many" "null format with arguments" } */
20
21 my_printf (my_format ("", NULL));
22 my_printf (my_format ("", NULL), i1); /* { dg-warning "too many" "null format_arg with arguments" } */
23
24 /* While my_printf allows a null argument, dgettext does not, so we expect
25 a null argument warning here. */
26 my_printf (dgettext ("", NULL)); /* { dg-warning "null" "null format with dgettext" } */
27 }
28