From 77092d95811257229727364b32e903d8b0db3792 Mon Sep 17 00:00:00 2001 From: Nikolaus Rath Date: Mon, 25 Sep 2017 10:34:07 +0100 Subject: fuse_lib_ioctl(): don't call memcpy with NULL argument This was detected by using clang's undefined behavior sanitizer, but didn't seem to cause problems in practice. --- lib/fuse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/fuse.c b/lib/fuse.c index 5cc4e42..7b0b979 100644 --- a/lib/fuse.c +++ b/lib/fuse.c @@ -4148,7 +4148,7 @@ static void fuse_lib_ioctl(fuse_req_t req, fuse_ino_t ino, int cmd, void *arg, } assert(!in_bufsz || !out_bufsz || in_bufsz == out_bufsz); - if (out_buf) + if (out_buf && in_bufsz) memcpy(out_buf, in_buf, in_bufsz); err = get_path_nullok(f, ino, &path); -- cgit v1.2.3