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/* ignore a function return without a compiler warning
Copyright (C) 2008-2009 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 Jim Meyering. */
/* Use these functions to avoid a warning when using a function declared with
gcc's warn_unused_result attribute, but for which you really do want to
ignore the result. Traditionally, people have used a "(void)" cast to
indicate that a function's return value is deliberately unused. However,
if the function is declared with __attribute__((warn_unused_result)),
gcc issues a warning even with the cast.
Caution: most of the time, you really should heed gcc's warning, and
check the return value. However, in those exceptional cases in which
you're sure you know what you're doing, use this function.
For the record, here's one of the ignorable warnings:
"copy.c:233: warning: ignoring return value of 'fchown',
declared with attribute warn_unused_result". */
static inline void ignore_value (int i) { (void) i; }
static inline void ignore_ptr (void* p) { (void) p; }
/* FIXME: what about aggregate types? */
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