From: René Scharfe <rene.scharfe@lsrfire.ath.cx>
Date: Thu, 6 Oct 2011 16:03:35 +0000 (+0200)
Subject: pickaxe: plug diff filespec leak with empty needle
X-Git-Tag: v1.7.8-rc0~38^2~6
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=05ac978495e84fe03d91ab591524b7ea138900ed;p=git-core%2Fgit.git

pickaxe: plug diff filespec leak with empty needle

Check first for the unlikely case of an empty needle string and only
then populate the filespec, lest we leak it.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c
index c3760cfef..0835a3be8 100644
--- a/diffcore-pickaxe.c
+++ b/diffcore-pickaxe.c
@@ -152,10 +152,10 @@ static unsigned int contains(struct diff_filespec *one,
 	unsigned int cnt;
 	unsigned long sz;
 	const char *data;
-	if (diff_populate_filespec(one, 0))
-		return 0;
 	if (!len)
 		return 0;
+	if (diff_populate_filespec(one, 0))
+		return 0;
 
 	sz = one->size;
 	data = one->data;