change sigset_t functions to restrict to _NSIG

[musl] / src / signal / sigismember.c

diff --git a/src/signal/sigismember.c b/src/signal/sigismember.c
index 1a22108..dd1a8db 100644 (file)
--- a/src/signal/sigismember.c
+++ b/src/signal/sigismember.c
@@ -4,6 +4,6 @@
 int sigismember(const sigset_t *set, int sig)
 {
        unsigned s = sig-1;
-       if (s >= 8*sizeof(sigset_t)) return 0;
+       if (s >= _NSIG-1) return 0;
        return !!(set->__bits[s/8/sizeof *set->__bits] & 1UL<<(s&8*sizeof *set->__bits-1));
 }