guix/gnu/packages/patches/libxml2-node-sort-order-pt2.patch

From 3eaedba1b64180668fdab7ad2eba549586017bf3 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sat, 11 Jul 2015 14:27:34 +0200
Subject: [PATCH] Fix previous change to node sort order

Commit ba58f23 broke comparison of nodes from different documents.
Thanks to Olli Pottonen for the report.
---
 xpath.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xpath.c b/xpath.c
index e9f5bf9..935fcff 100644
--- a/xpath.c
+++ b/xpath.c
@@ -361,14 +361,14 @@ turtle_comparison:
     /*
      * compute depth to root
      */
-    for (depth2 = 0, cur = node2; cur != NULL; cur = cur->parent) {
-	if (cur == node1)
+    for (depth2 = 0, cur = node2; cur->parent != NULL; cur = cur->parent) {
+	if (cur->parent == node1)
 	    return(1);
 	depth2++;
     }
     root = cur;
-    for (depth1 = 0, cur = node1; cur != NULL; cur = cur->parent) {
-	if (cur == node2)
+    for (depth1 = 0, cur = node1; cur->parent != NULL; cur = cur->parent) {
+	if (cur->parent == node2)
 	    return(-1);
 	depth1++;
     }
-- 
2.6.3