Viewing file:  null-1.c (1.06 KB) -rw-r--r--
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/* Test for some aspects of null format string handling. */
/* Origin: Jason Thorpe <thorpej@wasabisystems.com> */
/* { dg-do compile } */
/* { dg-options "-std=gnu99 -Wformat" } */
#define DONT_GNU_PROTOTYPE
#include "format.h"
extern void my_printf (const char *, ...) __attribute__((format(gnu_attr_printf,1,2)));
extern const char *my_format (const char *, const char *)
__attribute__((format_arg(2)));
void
foo (int i1)
{
/* Warning about a null format string has been decoupled from the actual
format check. However, we still expect to be warned about any excess
arguments after a null format string. */
my_printf (NULL);
my_printf (NULL, i1); /* { dg-warning "too many" "null format with arguments" } */
my_printf (my_format ("", NULL));
my_printf (my_format ("", NULL), i1); /* { dg-warning "too many" "null format_arg with arguments" } */
/* While my_printf allows a null argument, dgettext does not, so we expect
a null argument warning here. */
my_printf (dgettext ("", NULL)); /* { dg-warning "null" "null format with dgettext" } */
}
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