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  }