File: no-exargs-2.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (27 lines) | stat: -rw-r--r-- 1,190 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
/* Test for warnings for extra format arguments being disabled by
   -Wno-format-extra-args.  Test which warnings still apply with $
   operand numbers.  */
/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
/* { dg-do compile } */
/* { dg-options "-std=gnu99 -Wformat -Wno-format-extra-args" } */

#include "format.h"

void
foo (int i, int *ip, va_list va)
{
  printf ("%3$d%1$d", i, i, i); /* { dg-warning "before used" "unused $ operand" } */
  printf ("%2$d%1$d", i, i, i);
  vprintf ("%3$d%1$d", va); /* { dg-warning "before used" "unused $ operand" } */
  /* With scanf formats, gaps in the used arguments are allowed only if the
     arguments are all pointers.  In such a case, should only give the lesser
     warning about unused arguments rather than the more serious one about
     argument gaps.  */
  scanf ("%3$d%1$d", ip, ip, ip);
  /* If there are non-pointer arguments unused at the end, this is also OK.  */
  scanf ("%3$d%1$d", ip, ip, ip, i);
  scanf ("%3$d%1$d", ip, i, ip); /* { dg-warning "before used" "unused $ scanf non-pointer operand" } */
  /* Can't check the arguments in the vscanf case, so should suppose the
     lesser problem.  */
  vscanf ("%3$d%1$d", va);
}