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

   1 /* Test for warnings for missing format attributes.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile { target { *-*-mingw* } } } */
   4 /* { dg-options "-std=gnu99 -Wmissing-format-attribute" } */
   5
   6 #define USE_SYSTEM_FORMATS
   7 #include "format.h"
   8
   9 void
  10 foo (const char *fmt, ...)
  11 {
  12   va_list ap;
  13   va_start (ap, fmt);
  14   vprintf (fmt, ap); /* { dg-warning "candidate" "printf attribute warning" } */
  15   va_end (ap);
  16 }
  17
  18 void
  19 bar (const char *fmt, ...)
  20 {
  21   va_list ap;
  22   va_start (ap, fmt);
  23   vscanf (fmt, ap); /* { dg-warning "candidate" "scanf attribute warning" } */
  24   va_end (ap);
  25 }
  26
  27 __attribute__((__format__(__ms_printf__, 1, 2))) void
  28 foo2 (const char *fmt, ...)
  29 {
  30   va_list ap;
  31   va_start (ap, fmt);
  32   vprintf (fmt, ap);
  33   va_end (ap);
  34 }
  35
  36 void
  37 vfoo (const char *fmt, va_list arg)
  38 {
  39   vprintf (fmt, arg); /* { dg-warning "candidate" "printf attribute warning 2" } */
  40 }