diff options
Diffstat (limited to 'gl/tests/test-ignore-value.c')
-rw-r--r-- | gl/tests/test-ignore-value.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/gl/tests/test-ignore-value.c b/gl/tests/test-ignore-value.c new file mode 100644 index 0000000000..6953f4cadf --- /dev/null +++ b/gl/tests/test-ignore-value.c @@ -0,0 +1,84 @@ +/* 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; +} |