nginx 0.5.7 *) Feature: the ssl_session_cache storage optimization. *) Bugfixes in the "ssl_session_cache" and "limit_zone" directives. *) Bugfix: the segmentation fault was occurred on start or while reconfiguration if the "ssl_session_cache" or "limit_zone" directives were used on 64-bit platforms. *) Bugfix: a segmentation fault occurred if the "add_before_body" or "add_after_body" directives were used and there was no "Content-Type" header line in response. *) Bugfix: the OpenSSL library was always built with the threads support. Thanks to Den Ivanov. *) Bugfix: the PCRE-6.5+ library and the icc compiler compatibility.

--- a/src/core/ngx_rbtree.h
+++ b/src/core/ngx_rbtree.h
@@ -50,9 +50,16 @@ void ngx_rbtree_insert_timer_value(ngx_r
     ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
 
 
+#define ngx_rbt_red(node)               ((node)->color = 1)
+#define ngx_rbt_black(node)             ((node)->color = 0)
+#define ngx_rbt_is_red(node)            ((node)->color)
+#define ngx_rbt_is_black(node)          (!ngx_rbt_is_red(node))
+#define ngx_rbt_copy_color(n1, n2)      (n1->color = n2->color)
+
+
 /* a sentinel must be black */
 
-#define ngx_rbtree_sentinel_init(node)   node->color = 0
+#define ngx_rbtree_sentinel_init(node)  ngx_rbt_black(node)
 
 
 static ngx_inline ngx_rbtree_node_t *