gcc/testsuite/gcc.dg/format/c99-printf-2.c

   1 /* Test for printf formats.  Formats using extensions to the standard
   2    should be rejected in strict pedantic mode.
   3 */
   4 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   5 /* { dg-do compile } */
   6 /* { dg-options "-std=iso9899:1999 -pedantic -Wformat" } */
   7
   8 #include "format.h"
   9
  10 void
  11 foo (int i, long long ll, size_t z, wint_t lc, wchar_t *ls)
  12 {
  13   /* The length modifiers q, Z and L as applied to integer formats are
  14      extensions.
  15   */
  16   printf ("%qd", ll); /* { dg-warning "C" "%q length" } */
  17   printf ("%Ld", ll); /* { dg-warning "C" "%L length" } */
  18   printf ("%Zd", z); /* { dg-warning "C" "%Z length" } */
  19   /* The conversion specifiers C and S are X/Open extensions; the
  20      conversion specifier m is a GNU extension.
  21   */
  22   printf ("%m"); /* { dg-warning "C" "printf %m" } */
  23   printf ("%C", lc); /* { dg-warning "C" "printf %C" } */
  24   printf ("%S", ls); /* { dg-warning "C" "printf %S" } */
  25   /* The flag character ', and the use of operand number $ formats, are
  26      X/Open extensions.
  27   */
  28   printf ("%'d", i); /* { dg-warning "C" "printf ' flag" } */
  29   printf ("%1$d", i); /* { dg-warning "C" "printf $ format" } */
  30   /* The flag character I is a GNU extension.  */
  31   printf ("%Id", i); /* { dg-warning "C" "printf I flag" } */
  32 }