Don't crash if mountpoint is not specified.

Fixes: #319.

1 files changed, 7 insertions, 0 deletions

diff --git a/example/passthrough_ll.c b/example/passthrough_ll.c
index db4a3f3..4091395 100644
--- a/example/passthrough_ll.c
+++ b/example/passthrough_ll.c
@@ -1189,6 +1189,13 @@ int main(int argc, char *argv[])
 		goto err_out1;
 	}
 
+	if(opts.mountpoint == NULL) {
+		printf("usage: %s [options] <mountpoint>\n", argv[0]);
+		printf("       %s --help\n", argv[0]);
+		ret = 1;
+		goto err_out1;
+	}
+
 	if (fuse_opt_parse(&args, &lo, lo_opts, NULL)== -1)
 		return 1;