From 172804be7d76df495be174b3b62245d81490beaa Mon Sep 17 00:00:00 2001
From: Dana Jansens <danakj@orodu.net>
Date: Wed, 11 Nov 2009 15:34:42 -0500
Subject: [PATCH] Remove unneeded variables, including tree->lowest_version

---
 glib/gtree.c | 22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/glib/gtree.c b/glib/gtree.c
index 511748bc..0e04b022 100644
--- a/glib/gtree.c
+++ b/glib/gtree.c
@@ -67,7 +67,6 @@ struct _GTree
   guint             nnodes;
   gint              ref_count;
   guint             version;
-  guint             lowest_version;
 };
 
 #define root(i)         roots[i].root
@@ -250,7 +249,6 @@ g_tree_new_full (GCompareDataFunc key_compare_func,
   tree->nnodes             = 0;
   tree->ref_count          = 1;
   tree->version            = 0;
-  tree->lowest_version     = 0;
 
   tree->roots[0].root      = NULL;
   tree->roots[0].version   = 0;
@@ -446,7 +444,7 @@ g_tree_remove_all (GTree *tree)
   g_tree_node_remove (tree, tree->root(NOW));
 
   tree->roots[0].root = NULL;
-  tree->roots[0].version = tree->version = tree->lowest_version = 0;
+  tree->roots[0].version = tree->version = 0;
   tree->nnodes = 0;
 }
 
@@ -680,34 +678,24 @@ void
 g_tree_delete_versions (GTree *tree,
                         guint  version)
 {
-  GTreeRootVersion *rv;
   guint rm, i, l, keep, next;
 
   g_return_if_fail (tree != NULL);
   g_return_if_fail (version < tree->version);
 
-  if (version < tree->lowest_version)
+  if (version < tree->roots[tree->nroots > 1 ? 1 : 0].version)
     return;
-  tree->lowest_version = version+1;
 
-  rv = g_tree_root_find_version (tree, tree->lowest_version);
   rm = 0;
-
-  /* mark everything we want to keep with lower versions as belonging to
-     the tree's lowest version */
-  //g_tree_mark_version (rv->root, tree->lowest_version);
-
-  /* delete older stuff */
   i = tree->nroots > 1 ? 1 : 0;
   next = next_version (i, tree->nroots);
-  while (i < tree->nroots &&
-         tree->roots[i].version < tree->lowest_version)
+  while (i < tree->nroots && tree->roots[i].version < version + 1)
     {
       guint nextv, v;
 
       if (next == tree->nroots ||
-          tree->roots[next].version > tree->lowest_version)
-        nextv = tree->lowest_version;
+          tree->roots[next].version > version + 1)
+        nextv = version + 1;
       else if (next < tree->nroots &&
                tree->roots[next].root == tree->roots[i].root)
         nextv = tree->roots[next].version;
-- 
2.34.1