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 } */
       6  /* { dg-options "-std=gnu99 -Wformat -Wno-format-extra-args" } */
       7  
       8  #include "format.h"
       9  
      10  void
      11  foo (int i, int *ip, va_list va)
      12  {
      13    printf ("%3$d%1$d", i, i, i); /* { dg-warning "before used" "unused $ operand" } */
      14    printf ("%2$d%1$d", i, i, i);
      15    vprintf ("%3$d%1$d", va); /* { dg-warning "before used" "unused $ operand" } */
      16    /* With scanf formats, gaps in the used arguments are allowed only if the
      17       arguments are all pointers.  In such a case, should only give the lesser
      18       warning about unused arguments rather than the more serious one about
      19       argument gaps.  */
      20    scanf ("%3$d%1$d", ip, ip, ip);
      21    /* If there are non-pointer arguments unused at the end, this is also OK.  */
      22    scanf ("%3$d%1$d", ip, ip, ip, i);
      23    scanf ("%3$d%1$d", ip, i, ip); /* { dg-warning "before used" "unused $ scanf non-pointer operand" } */
      24    /* Can't check the arguments in the vscanf case, so should suppose the
      25       lesser problem.  */
      26    vscanf ("%3$d%1$d", va);
      27  }