1  /* Test for format attributes: test default attributes are applied
       2     to implicit declarations.  */
       3  /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
       4  /* { dg-do compile } */
       5  /* { dg-options "-std=gnu89 -Wformat" } */
       6  
       7  /* We can't #include "format.h" here.  */
       8  
       9  /* Technically, none of the format functions should be implicitly declared;
      10     either the implicit type is wrong, the function has variable arguments
      11     or it requires a type declared in a header.  However, some bad programming
      12     practice uses implicit declarations of some of these functions.
      13  
      14     Note that printf is not used in this test because of the declaration
      15     of it as a built-in function.  */
      16  
      17  void
      18  foo (const char *s, int *p)
      19  {
      20    scanf("%ld", p); /* { dg-warning "12:format" "implicit scanf" } */
      21    /* { dg-warning "implicit" "implicit decl warning" { target *-*-* } .-1 } */
      22  }