view gcc/testsuite/g++.dg/warn/miss-format-1.C @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
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/* Test for warnings for missing format attributes.  */
/* Origin: Joseph Myers <jsm28@cam.ac.uk> */
/* { dg-do compile } */
/* { dg-options "-Wmissing-format-attribute" } */
/* { dg-options "-Wmissing-format-attribute -Wno-abi" { target arm_eabi } } */

#include <stdio.h>
#include <stdarg.h>

void
foo (const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  vprintf (fmt, ap); /* { dg-warning "candidate" "printf attribute warning" } */
  va_end (ap);
}

void
bar (const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  vscanf (fmt, ap); /* { dg-warning "candidate" "scanf attribute warning" { xfail *-*-vxworks* } } */
  /* VxWorks does not provide vscanf, either in kernel or RTP mode.  */
  /* { dg-error "not declared" "" { target *-*-vxworks* } .-2 } */
  va_end (ap);
}

__attribute__((__format__(__printf__, 1, 2))) void
foo2 (const char *fmt, ...)
{
  va_list ap;
  va_start (ap, fmt);
  vprintf (fmt, ap);
  va_end (ap);
}

void
vfoo (const char *fmt, va_list arg)
{
  vprintf (fmt, arg); /* { dg-warning "candidate" "printf attribute warning 2" } */
}