[musl] [PATCH] fix segfault in lutimes when tv argument is NULL

["Érico Nogueira" <ericonr@disroot.org>]

From: Érico Rolim <ericonr@disroot.org>

calling lutimes with tv=0 is valid if the applications wants to set the
timestamps to the current time. short-circuit the function to call
utimensat with times=0 directly if tv == 0.
---

Bug reported on IRC by nmeum

 src/legacy/lutimes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/legacy/lutimes.c b/src/legacy/lutimes.c
index 2e5502d1..22176230 100644
--- a/src/legacy/lutimes.c
+++ b/src/legacy/lutimes.c
@@ -5,6 +5,7 @@
 
 int lutimes(const char *filename, const struct timeval tv[2])
 {
+	if (!tv) return utimensat(AT_FDCWD, filename, 0, AT_SYMLINK_NOFOLLOW);
 	struct timespec times[2];
 	times[0].tv_sec  = tv[0].tv_sec;
 	times[0].tv_nsec = tv[0].tv_usec * 1000;
-- 
2.29.2