From b1ef5dee93d9aa585544e271721f9b84ebf903a9 Mon Sep 17 00:00:00 2001
From: Mnikolenko ProductEngine <mnikolenko@productengine.com>
Date: Tue, 4 Nov 2014 13:07:14 +0200
Subject: MAINT-4619 FIXED Using Align Planar Faces on flexible prims causes
 viewer to crash

---
 indra/newview/llface.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index 32b510b21a..2182b619be 100755
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -956,6 +956,10 @@ void LLFace::getPlanarProjectedParams(LLQuaternion* face_rot, LLVector3* face_po
 	const LLVolumeFace& vf = getViewerObject()->getVolume()->getVolumeFace(mTEOffset);
 	const LLVector4a& normal4a = vf.mNormals[0];
 	const LLVector4a& tangent = vf.mTangents[0];
+	if (!&tangent)
+	{
+		return;
+	}
 
 	LLVector4a binormal4a;
 	binormal4a.setCross3(normal4a, tangent);
-- 
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