From 59e6f961d146b4240984fa229a5e37b833dddd69 Mon Sep 17 00:00:00 2001
From: gustav_b <gustav_b@users.sourceforge.net>
Date: Wed, 28 Mar 2007 20:38:10 +0000
Subject: [PATCH] Fix for #1684042 (undo while adding a shape with the mouse
 results in a crash.)

---
 src/document-undo.cpp | 2 +-
 src/event-log.cpp     | 7 +++++++
 src/event-log.h       | 3 ++-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/document-undo.cpp b/src/document-undo.cpp
index 0462ff374..47d56ca66 100644
--- a/src/document-undo.cpp
+++ b/src/document-undo.cpp
@@ -201,7 +201,7 @@ void finish_incomplete_transaction(SPDocument &doc) {
 		g_warning ("Incomplete undo transaction:");
 		priv.partial = sp_repr_coalesce_log(priv.partial, log);
 		sp_repr_debug_print_log(priv.partial);
-		priv.undo = g_slist_prepend(priv.undo, priv.partial);
+		priv.undo = g_slist_prepend(priv.undo, new Inkscape::Event(priv.partial));
 		priv.partial = NULL;
 	}
 }
diff --git a/src/event-log.cpp b/src/event-log.cpp
index 08fb45f9b..d6bc99bea 100644
--- a/src/event-log.cpp
+++ b/src/event-log.cpp
@@ -42,6 +42,9 @@ EventLog::notifyUndoEvent(Event* log)
 {
     if ( !_notifications_blocked ) {
     
+        // make sure the supplied event matches the next undoable event
+        g_return_if_fail ( _getUndoEvent() && (*(_getUndoEvent()))[_columns.event] == log );
+
         // if we're on the first child event...
         if ( _curr_event->parent() &&
              _curr_event == _curr_event->parent()->children().begin() )
@@ -93,6 +96,9 @@ EventLog::notifyRedoEvent(Event* log)
 {
     if ( !_notifications_blocked ) {
 
+        // make sure the supplied event matches the next redoable event
+        g_return_if_fail ( _getRedoEvent() && (*(_getRedoEvent()))[_columns.event] == log );
+
         // if we're on a parent event...
         if ( !_curr_event->children().empty() ) {
 
@@ -207,6 +213,7 @@ EventLog::notifyUndoCommitEvent(Event* log)
 
     _curr_event = _last_event = curr_row;
 
+    curr_row[_columns.event] = log;
     curr_row[_columns.type] = event_type;
     curr_row[_columns.description] = log->description;
 
diff --git a/src/event-log.h b/src/event-log.h
index 259731de2..02cfa4b9a 100644
--- a/src/event-log.h
+++ b/src/event-log.h
@@ -53,13 +53,14 @@ public:
 
     struct EventModelColumns : public Gtk::TreeModelColumnRecord
     {
+        Gtk::TreeModelColumn<Event *> event;
         Gtk::TreeModelColumn<unsigned int> type;
         Gtk::TreeModelColumn<Glib::ustring> description;
         Gtk::TreeModelColumn<int> child_count;
 
         EventModelColumns()
         { 
-            add(type); add(description); add(child_count);
+            add(event); add(type); add(description); add(child_count);
         }
     };
 
-- 
2.30.2