/* Test for some aspects of null format string handling. */ /* Origin: Jason Thorpe <thorpej@wasabisystems.com> */ /* { dg-do compile } */ /* { dg-options "-std=gnu99 -Wformat" } */ #include "format.h" extern void my_printf (const char *, ...) __attribute__((format(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" } */ }