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fix null pointer dereference introduced in last sigprocmask commit
[musl]
/
src
/
signal
/
sigprocmask.c
diff --git
a/src/signal/sigprocmask.c
b/src/signal/sigprocmask.c
index
db27f12
..
1bc5baa
100644
(file)
--- 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);