| /* 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? */ | |