gcc/testsuite/gcc.dg/format/c90-scanf-3.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=iso9899:1990 -pedantic -Wformat" } */
   7
   8 #include "format.h"
   9
  10 void
  11 foo (char **sp, wchar_t **lsp)
  12 {
  13   /* %a formats for allocation, only recognized in C90 mode, are a
  14      GNU extension.
  15   */
  16   scanf ("%as", sp); /* { dg-warning "C" "%as" } */
  17   scanf ("%aS", lsp); /* { dg-warning "C" "%aS" } */
  18   scanf ("%a[bcd]", sp); /* { dg-warning "C" "%a[]" } */
  19 }