From: Bartosz Golaszewski <bartekgola@gmail.com>
Date: Fri, 7 Mar 2014 10:46:03 +0000 (+0100)
Subject: shuf: fix a segfault on 'shuf -e'
X-Git-Tag: 1_23_0~162
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=58adbb5505d0c643c18d956934aa8afa18e612eb;p=oweals%2Fbusybox.git

shuf: fix a segfault on 'shuf -e'

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/coreutils/shuf.c b/coreutils/shuf.c
index f213d6759..648a4abbb 100644
--- a/coreutils/shuf.c
+++ b/coreutils/shuf.c
@@ -126,7 +126,8 @@ int shuf_main(int argc, char **argv)
 		fclose_if_not_stdin(fp);
 	}
 
-	shuffle_lines(lines, numlines);
+	if (numlines != 0)
+		shuffle_lines(lines, numlines);
 
 	if (opts & OPT_o)
 		xmove_fd(xopen(opt_o_str, O_WRONLY|O_CREAT|O_TRUNC), STDOUT_FILENO);