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author | Andy Wingo <wingo@pobox.com> | 2015-10-25 10:49:41 +0000 |
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committer | Andy Wingo <wingo@pobox.com> | 2015-10-25 10:55:14 +0000 |
commit | 95ac2204d9084a01677fff9eb2669c495bd07d3d (patch) | |
tree | b603eaaf67caaab75489478ab51605a70be006fa /lib/ignore-value.h | |
parent | 1c9e23c0901363ff24c1dc4e085e7ed68cb81e6d (diff) | |
download | guile-95ac2204d9084a01677fff9eb2669c495bd07d3d.tar.gz |
Revert "Update Gnulib to v0.1-603-g1d16a7b"
This reverts commit 2d4da30fdefbcdb065d4b1f48f2a77d06f69e3c3.
This Gnulib update was causing failures related to timezones in
stime.c. I tried to fix it by adopting the time_rz module from gnulib
but that then caused other failures. We can try again later.
Diffstat (limited to 'lib/ignore-value.h')
-rw-r--r-- | lib/ignore-value.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/ignore-value.h b/lib/ignore-value.h new file mode 100644 index 000000000..86cfad77b --- /dev/null +++ b/lib/ignore-value.h @@ -0,0 +1,37 @@ +/* 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? */ |