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| author | Rich Felker <dalias@aerifal.cx> | 2011-03-07 18:09:24 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-03-07 18:09:24 -0500 |
| commit | 9fe28f703d44ff1ddecdca945bfb5fc87de5e8ad (patch) | |
| tree | 43f46e8b5f847b6cad08efc308255559a4a2bc22 | |
| parent | 5fd4a9816573a3b6a244b73b84ce0cec871321da (diff) | |
| download | musl-9fe28f703d44ff1ddecdca945bfb5fc87de5e8ad.tar.gz musl-9fe28f703d44ff1ddecdca945bfb5fc87de5e8ad.tar.xz musl-9fe28f703d44ff1ddecdca945bfb5fc87de5e8ad.zip | |
fix off-by-one error in sem_(timed)wait (using old sem value instead of new)
| -rw-r--r-- | src/thread/sem_timedwait.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/sem_timedwait.c b/src/thread/sem_timedwait.c index e6604364..e6c2495a 100644 --- a/src/thread/sem_timedwait.c +++ b/src/thread/sem_timedwait.c @@ -7,7 +7,7 @@ int sem_timedwait(sem_t *sem, const struct timespec *at) for (;;) { if (a_fetch_add(sem->__val, -1) > 0) return 0; - val = a_fetch_add(sem->__val, 1); + val = a_fetch_add(sem->__val, 1)+1; CANCELPT_BEGIN; if (val <= 0 && __timedwait(sem->__val, val, CLOCK_REALTIME, at, 0) == ETIMEDOUT) { errno = ETIMEDOUT; |