gnu/dist/gcc4/gcc/testsuite/gcc.dg/format/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 } */
   6 /* { dg-options "-std=iso9899:1999 -pedantic -Wformat" } */
   7
   8 #include "format.h"
   9
  10 void
  11 foo (int *ip, long long int *llp, wchar_t *ls)
  12 {
  13   /* The length modifiers q and L as applied to integer formats are
  14      extensions.
  15   */
  16   scanf ("%qd", llp); /* { dg-warning "C" "%q length" } */
  17   scanf ("%Ld", llp); /* { dg-warning "C" "%L length" } */
  18   /* The conversion specifiers C and S are X/Open extensions.  */
  19   scanf ("%C", ls); /* { dg-warning "C" "scanf %C" } */
  20   scanf ("%S", ls); /* { dg-warning "C" "scanf %S" } */
  21   /* The use of operand number $ formats is an X/Open extension.  */
  22   scanf ("%1$d", ip); /* { dg-warning "C" "scanf $ format" } */
  23   /* glibc also supports flags ' and I on scanf formats as an extension.  */
  24   scanf ("%'d", ip); /* { dg-warning "C" "scanf ' flag" } */
  25   scanf ("%Id", ip); /* { dg-warning "C" "scanf I flag" } */
  26 }