1  /* Test for warnings for extra format arguments being disabled by
       2     -Wno-format-extra-args.  Test which warnings still apply with $
       3     operand numbers.  */
       4  /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
       5  /* { dg-do compile { target { *-*-mingw* } } } */
       6  /* { dg-options "-std=gnu99 -Wformat -Wno-format-extra-args" } */
       7  
       8  #define USE_SYSTEM_FORMATS
       9  #include "format.h"
      10  
      11  void
      12  foo (int i, int *ip, va_list va)
      13  {
      14    printf ("%3$d%1$d", i, i, i); /* { dg-warning "before used" "unused $ operand" } */
      15    printf ("%2$d%1$d", i, i, i);
      16    vprintf ("%3$d%1$d", va); /* { dg-warning "before used" "unused $ operand" } */
      17    /* With scanf formats, gaps in the used arguments are allowed only if the
      18       arguments are all pointers.  In such a case, should only give the lesser
      19       warning about unused arguments rather than the more serious one about
      20       argument gaps.  */
      21    scanf ("%3$d%1$d", ip, ip, ip);
      22    /* If there are non-pointer arguments unused at the end, this is also OK.  */
      23    scanf ("%3$d%1$d", ip, ip, ip, i);
      24    scanf ("%3$d%1$d", ip, i, ip); /* { dg-warning "before used" "unused $ scanf non-pointer operand" } */
      25    /* Can't check the arguments in the vscanf case, so should suppose the
      26       lesser problem.  */
      27    vscanf ("%3$d%1$d", va);
      28  }