gcc/testsuite/gcc.dg/format/ms_c99-scanf-2.c

   1 /* Test for scanf 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 { target { *-*-mingw* } } } */
   6 /* { dg-options "-std=iso9899:1999 -pedantic -Wformat" } */
   7
   8 #define USE_SYSTEM_FORMATS
   9 #include "format.h"
  10
  11 void
  12 foo (int *ip, long long int *llp, wchar_t *ls)
  13 {
  14   /* The length modifiers q and L as applied to integer formats are
  15      extensions.
  16   */
  17   scanf ("%qd", llp); /* { dg-warning "unknown|format" "%q is unsupported" } */
  18   scanf ("%Ld", llp); /* { dg-warning "unknown|format" "%L is unsupported" } */
  19   /* The conversion specifiers C and S are X/Open extensions.  */
  20   scanf ("%C", ls); /* { dg-warning "C" "scanf %C" } */
  21   scanf ("%S", ls); /* { dg-warning "C" "scanf %S" } */
  22   /* The use of operand number $ formats is an X/Open extension.  */
  23   scanf ("%1$d", ip); /* { dg-warning "C" "scanf $ format" } */
  24   /* glibc also supports flags ' and I on scanf formats as an extension.  */
  25   scanf ("%'d", ip); /* { dg-warning "C" "scanf ' flag" } */
  26   scanf ("%Id", (ssize_t *)ip); /* { dg-warning "C" "scanf I flag" } */
  27 }