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/* Test the "ignore-value" module.
Copyright (C) 2011 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Eric Blake. */
#include <config.h>
#include "ignore-value.h"
#include <stdio.h>
#ifndef _GL_ATTRIBUTE_RETURN_CHECK
# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
# define _GL_ATTRIBUTE_RETURN_CHECK
# else
# define _GL_ATTRIBUTE_RETURN_CHECK __attribute__((__warn_unused_result__))
# endif
#endif
struct s { int i; };
static char doChar (void) _GL_ATTRIBUTE_RETURN_CHECK;
static int doInt (void) _GL_ATTRIBUTE_RETURN_CHECK;
static off_t doOff (void) _GL_ATTRIBUTE_RETURN_CHECK;
static void *doPtr (void) _GL_ATTRIBUTE_RETURN_CHECK;
static struct s doStruct (void) _GL_ATTRIBUTE_RETURN_CHECK;
static char
doChar (void)
{
return 0;
}
static int
doInt (void)
{
return 0;
}
static off_t
doOff (void)
{
return 0;
}
static void *
doPtr (void)
{
return NULL;
}
static struct s
doStruct (void)
{
static struct s s1;
return s1;
}
int
main (void)
{
/* If this test can compile with -Werror and the same warnings as
the rest of the project, then we are properly silencing warnings
about ignored return values. */
ignore_value (doChar ());
ignore_value (doInt ());
ignore_value (doOff ());
ignore_value (doPtr ());
ignore_value (doStruct ());
return 0;
}
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