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#define DONT_GNU_PROTOTYPE 7#include "format.h" 8 9extern void my_printf (const char *, ...) __attribute__((format(gnu_attr_printf,1,2))); 10extern const char *my_format (const char *, const char *) 11 __attribute__((format_arg(2))); 12 13void 14foo (int i1) 15{ 16 /* Warning about a null format string has been decoupled from the actual 17 format check. However, we still expect to be warned about any excess 18 arguments after a null format string. */ 19 my_printf (NULL); 20 my_printf (NULL, i1); /* { dg-warning "too many" "null format with arguments" } */ 21 22 my_printf (my_format ("", NULL)); 23 my_printf (my_format ("", NULL), i1); /* { dg-warning "too many" "null format_arg with arguments" } */ 24 25 /* While my_printf allows a null argument, dgettext does not, so we expect 26 a null argument warning here. */ 27 my_printf (dgettext ("", NULL)); /* { dg-warning "null" "null format with dgettext" } */ 28} 29