1 files changed, 34 insertions, 0 deletions
diff --git a/indra/newview/llteleporthistory.cpp b/indra/newview/llteleporthistory.cpp
index dcc85392f7..cac3b58464 100644
--- a/indra/newview/llteleporthistory.cpp
+++ b/indra/newview/llteleporthistory.cpp
@@ -38,6 +38,7 @@
 #include "llsdserialize.h"
 
 #include "llagent.h"
+#include "llvoavatarself.h"
 #include "llslurl.h"
 #include "llviewercontrol.h"        // for gSavedSettings
 #include "llviewerparcelmgr.h"
@@ -108,6 +109,16 @@ void LLTeleportHistory::onTeleportFailed()
 	}
 }
 
+void LLTeleportHistory::handleLoginComplete()
+{
+	if( mGotInitialUpdate )
+	{
+		return;
+	}
+	updateCurrentLocation(gAgent.getPositionGlobal());
+}
+
+
 void LLTeleportHistory::updateCurrentLocation(const LLVector3d& new_pos)
 {
 	if (mRequestedItem != -1) // teleport within the history in progress?
@@ -117,6 +128,17 @@ void LLTeleportHistory::updateCurrentLocation(const LLVector3d& new_pos)
 	}
 	else
 	{
+		//EXT-7034
+		//skip initial update if agent avatar is no valid yet
+		//this may happen when updateCurrentLocation called while login process
+		//sometimes isAgentAvatarValid return false and in this case new_pos
+		//(which actually is gAgent.getPositionGlobal() ) is invalid
+		//if this position will be saved then teleport back will teleport user to wrong position
+		if ( !mGotInitialUpdate && !isAgentAvatarValid() )
+		{
+			return ;
+		}
+
 		// If we're getting the initial location update
 		// while we already have a (loaded) non-empty history,
 		// there's no need to purge forward items or add a new item.
@@ -136,6 +158,7 @@ void LLTeleportHistory::updateCurrentLocation(const LLVector3d& new_pos)
 		if (mCurrentItem < 0 || mCurrentItem >= (int) mItems.size()) // sanity check
 		{
 			llwarns << "Invalid current item. (this should not happen)" << llendl;
+			llassert(!"Invalid current teleport histiry item");
 			return;
 		}
 		LLVector3 new_pos_local = gAgent.getPosAgentFromGlobal(new_pos);
@@ -166,6 +189,17 @@ void LLTeleportHistory::onHistoryChanged()
 
 void LLTeleportHistory::purgeItems()
 {
+	if (mItems.size() == 0) // no entries yet (we're called before login)
+	{
+		// If we don't return here the history will get into inconsistent state, hence:
+		// 1) updateCurrentLocation() will malfunction,
+		//    so further teleports will not properly update the history;
+		// 2) mHistoryChangedSignal subscribers will be notified
+		//    of such an invalid change. (EXT-6798)
+		// Both should not happen.
+		return;
+	}
+
 	if (mItems.size() > 0)
 	{
 		mItems.erase(mItems.begin(), mItems.end()-1);