From: Ronnie Sahlberg <sahlberg@ronnie>
Date: Wed, 25 Jul 2007 07:22:04 +0000 (+1000)
Subject: if sibling is NULL it is a leaf node and thus black.
X-Git-Tag: tevent-0.9.20~348^2~2445^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=904e5ba55e5a8f613e47666e7ea63af4fb97eed2;p=thirdparty%2Fsamba.git

if sibling is NULL it is a leaf node and thus black.

(This used to be ctdb commit 400488472ba64514fa6534d5de90edba6c5e27c6)
---

diff --git a/ctdb/common/rb_tree.c b/ctdb/common/rb_tree.c
index acc175b965d..8acc983ceb8 100644
--- a/ctdb/common/rb_tree.c
+++ b/ctdb/common/rb_tree.c
@@ -328,7 +328,8 @@ trbt_delete_case2(trbt_node_t *node)
 	trbt_node_t *sibling;
 
 	sibling = trbt_sibling(node);
-	if (sibling->rb_color == TRBT_RED) {
+	/* If there is no sibling it is a leaf and thus black */
+	if (sibling && sibling->rb_color == TRBT_RED) {
 		if (node == node->parent->left) {
 			trbt_rotate_left(node->parent);
 		} else {
@@ -590,4 +591,4 @@ test_tree(void)
 	}
 }
 
-#endif
\ No newline at end of file
+#endif