diff options
| -rw-r--r-- | src/signal/sigprocmask.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/signal/sigprocmask.c b/src/signal/sigprocmask.c index db27f12a..1bc5baa6 100644 --- a/src/signal/sigprocmask.c +++ b/src/signal/sigprocmask.c @@ -12,7 +12,7 @@ int __sigprocmask(int how, const sigset_t *set, sigset_t *old) { sigset_t tmp; /* Disallow blocking thread control signals */ - if (how != SIG_UNBLOCK) { + if (set && how != SIG_UNBLOCK) { tmp = *set; set = &tmp; sigdelset(&tmp, SIGCANCEL); |