From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Tue, 15 Feb 2011 17:35:54 +0000 (+0100)
Subject: echo: fix SEGV when run with no args
X-Git-Tag: 1_19_0~282
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4fdb67cc65e93967448bb28e4cb810ad5648bfea;p=oweals%2Fbusybox.git

echo: fix SEGV when run with no args

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/coreutils/echo.c b/coreutils/echo.c
index 42c3f9ed8..72e18c161 100644
--- a/coreutils/echo.c
+++ b/coreutils/echo.c
@@ -97,7 +97,7 @@ int echo_main(int argc UNUSED_PARAM, char **argv)
 		buflen += strlen(arg) + 1;
 		pp++;
 	}
-	out = buffer = xmalloc(buflen);
+	out = buffer = xmalloc(buflen + 1); /* +1 is needed for "no args" case */
 
 	while ((arg = *argv) != NULL) {
 		int c;