From: Bob Weinand <bobwei9@hotmail.com>
Date: Sun, 15 Dec 2013 14:15:34 +0000 (-0500)
Subject: Preventing possible segfault
X-Git-Tag: php-5.6.0beta2~1^2~37^2~48
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a7b0dfb7b12cdfb6cd78e5f1c686094d7a567555;p=php

Preventing possible segfault
---

diff --git a/phpdbg_btree.c b/phpdbg_btree.c
index f47422f463..21f3fedcbb 100644
--- a/phpdbg_btree.c
+++ b/phpdbg_btree.c
@@ -34,6 +34,10 @@ phpdbg_btree_result *phpdbg_btree_find(phpdbg_btree *tree, zend_ulong idx) {
 	phpdbg_btree_branch *branch = tree->branch;
 	int i = tree->depth - 1;
 
+	if (branch == NULL) {
+		return NULL;
+	}
+
 	do {
 		if ((idx >> i) % 2 == 1) {
 		 	if (branch->branches[1]) {