/* Test for format attributes: test default attributes are applied to implicit declarations. */ /* Origin: Joseph Myers <jsm28@cam.ac.uk> */ /* { dg-do compile } */ /* { dg-options "-std=gnu89 -Wformat" } */ /* We can't #include "format.h" here. */ /* Technically, none of the format functions should be implicitly declared; either the implicit type is wrong, the function has variable arguments or it requires a type declared in a header. However, some bad programming practice uses implicit declarations of some of these functions. Note that printf is not used in this test because of the declaration of it as a built-in function. */ void foo (const char *s, int *p) { scanf("%ld", p); /* { dg-warning "format" "implicit scanf" } */ /* { dg-warning "implicit" "implicit decl warning" { target *-*-* } 20 } */ }