From b5b5ac32372c19b0776dceec67c9ed876b8616d3 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Fri, 28 Mar 2003 16:54:14 +0000
Subject: trivial fix to make sure we have sufficient arguments before we mess
with a possibly non-existant argv[1] -Erik
---
coreutils/tail.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
(limited to 'coreutils')
diff --git a/coreutils/tail.c b/coreutils/tail.c
index 8e0adf5b5..10b5cd7a7 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -118,11 +118,10 @@ int tail_main(int argc, char **argv)
const char *fmt;
/* Allow legacy syntax of an initial numeric option without -n. */
- if ((argv[1][0] == '+')
- || ((argv[1][0] == '-')
+ if (argc >=2 && ((argv[1][0] == '+') || ((argv[1][0] == '-')
/* && (isdigit)(argv[1][1]) */
- && (((unsigned int)(argv[1][1] - '0')) <= 9))
- ) {
+ && (((unsigned int)(argv[1][1] - '0')) <= 9))))
+ {
optind = 2;
optarg = argv[1];
goto GET_COUNT;
--
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