musl - musl - an implementation of the standard library for Linux-based systems

diff --git a/src/signal/sigaltstack.c b/src/signal/sigaltstack.c
index 62cb81ad..cfa3f5c1 100644
--- a/src/signal/sigaltstack.c
+++ b/src/signal/sigaltstack.c

@@ -9,7 +9,7 @@ int sigaltstack(const stack_t *restrict ss, stack_t *restrict old)

errno = ENOMEM;

return -1;

}

- if (ss->ss_flags & ~SS_DISABLE) {

+ if (ss->ss_flags & SS_ONSTACK) {

errno = EINVAL;

return -1;

}