From 02b28f6a45b46627a68086f6eba43c03ef6b8c80 Mon Sep 17 00:00:00 2001 From: Jakob Kaivo Date: Tue, 6 Aug 2019 09:04:52 -0400 Subject: check for missing operand --- nice.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/nice.c b/nice.c index 94af5f1..f66c416 100644 --- a/nice.c +++ b/nice.c @@ -50,6 +50,11 @@ int main(int argc, char *argv[]) } } + if (optind >= argc) { + fprintf(stderr, "nice: missing operand\n"); + return 1; + } + errno = 0; if (nice(increment) == -1 && errno != 0) { perror("nice"); -- cgit v1.2.1