diff options
Diffstat (limited to 'nptl/pthread_rwlock_unlock.c')
| -rw-r--r-- | nptl/pthread_rwlock_unlock.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_unlock.c b/nptl/pthread_rwlock_unlock.c index a6cadd491d..112f748a6b 100644 --- a/nptl/pthread_rwlock_unlock.c +++ b/nptl/pthread_rwlock_unlock.c @@ -35,6 +35,10 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) LIBC_PROBE (rwlock_unlock, 1, rwlock); + /* Trying to elide an unlocked lock may crash the process. This + is expected and is compatible with POSIX.1-2008: "results are + undefined if the read-write lock rwlock is not held by the + calling thread". */ if (ELIDE_UNLOCK (rwlock->__data.__writer == 0 && rwlock->__data.__nr_readers == 0)) return 0; |