gcc/testsuite/gcc.dg/format/ms_cast-1.c

   1 /* Test for strings cast through integer types: should not be treated
   2    as format strings unless the types are of the same width as
   3    pointers (intptr_t or similar).  */
   4 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   5 /* { dg-do compile { target { *-*-mingw* } } } */
   6 /* { dg-options "-Wformat" } */
   7
   8 #define USE_SYSTEM_FORMATS
   9 #include "format.h"
  10
  11 void
  12 f (int x)
  13 {
  14   printf("%s", x); /* { dg-warning "format" } */
  15   printf((char *)(size_t)"%s", x); /* { dg-warning "format" } */
  16   printf((char *)(char)"%s", x); /* { dg-warning "cast from pointer to integer of different size" } */
  17 }