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| author | Martin Schwenke <martin@meltin.net> | 2011-11-10 10:46:10 +1100 |
|---|---|---|
| committer | Stefan Metzmacher <metze@samba.org> | 2011-11-10 10:28:44 +0100 |
| commit | 538748132fbf6bcc1ce0bbd474e4abf3ecdabffa (patch) | |
| tree | e8c2f42d36bdbed2431a5a67d98e9e0a56f6ba62 /lib/tevent/tevent_signal.c | |
| parent | 7d84805ac06522dabeb4f8d5b69dab2918a508ba (diff) | |
| download | samba-538748132fbf6bcc1ce0bbd474e4abf3ecdabffa.tar.gz samba-538748132fbf6bcc1ce0bbd474e4abf3ecdabffa.tar.bz2 samba-538748132fbf6bcc1ce0bbd474e4abf3ecdabffa.zip | |
Fix -Wunused-but-set-variable compiler warnings in tevent_signal.c
The results of some read(2) and write(2) calls are assigned into a
variable that is never used. Presumably this used to avoid compiler
warnings or similar.
However, from (approximately) GCC 4.6 this produces some warnings:
[ 609/3910] Compiling lib/tevent/tevent_signal.c
../lib/tevent/tevent_signal.c: In function ‘tevent_common_signal_handler’:
../lib/tevent/tevent_signal.c:85:10: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
../lib/tevent/tevent_signal.c: In function ‘signal_pipe_handler’:
../lib/tevent/tevent_signal.c:183:10: warning: variable ‘res’ set but not used [-Wunused-but-set-variable]
The simplest thing to do is remove the variables and cast the function
return to void. There is already a comment above each call.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Diffstat (limited to 'lib/tevent/tevent_signal.c')
| -rw-r--r-- | lib/tevent/tevent_signal.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/lib/tevent/tevent_signal.c b/lib/tevent/tevent_signal.c index b7908593f0..fabe72cdc8 100644 --- a/lib/tevent/tevent_signal.c +++ b/lib/tevent/tevent_signal.c @@ -82,7 +82,6 @@ static uint32_t tevent_sig_count(struct tevent_sigcounter s) static void tevent_common_signal_handler(int signum) { char c = 0; - ssize_t res; struct tevent_common_signal_list *sl; struct tevent_context *ev = NULL; int saved_errno = errno; @@ -95,7 +94,7 @@ static void tevent_common_signal_handler(int signum) if (sl->se->event_ctx && sl->se->event_ctx != ev) { ev = sl->se->event_ctx; /* doesn't matter if this pipe overflows */ - res = write(ev->pipe_fds[1], &c, 1); + (void) write(ev->pipe_fds[1], &c, 1); } } @@ -180,9 +179,8 @@ static void signal_pipe_handler(struct tevent_context *ev, struct tevent_fd *fde uint16_t flags, void *_private) { char c[16]; - ssize_t res; /* its non-blocking, doesn't matter if we read too much */ - res = read(fde->fd, c, sizeof(c)); + (void) read(fde->fd, c, sizeof(c)); } /* |