From 8b8ae09fcc16cc0522679099728f779e291d959c Mon Sep 17 00:00:00 2001
From: Hans Breuer <hans@breuer.org>
Date: Fri, 18 Apr 2014 13:28:45 +0200
Subject: Bug 728405 - back-port some bounding box calculation fixes from
 master

... so that the unit test works without complaints.

diff --git a/lib/boundingbox.c b/lib/boundingbox.c
index fd50da7..46adbfa 100644
--- a/lib/boundingbox.c
+++ b/lib/boundingbox.c
@@ -494,7 +494,7 @@ polybezier_bbox(const BezPoint *pts, int numpoints,
        account with the "pointy corners" X (and PS) add when LINEJOIN_MITER mode is 
        in force. */
 
-    if ((!start) && (!end)) { /* We have a non-extremity vertex. */
+    if (!end) { /* only the last segment might not produce overshoot. */
       Point vpx,vxn;
       real co,alpha;
 
@@ -515,7 +515,7 @@ polybezier_bbox(const BezPoint *pts, int numpoints,
         real overshoot;
         Point vovs,pto;
 
-	if (finite(alpha))
+	if (alpha > 0.0 && alpha < M_PI)
 	  overshoot = extra->middle_trans / sin(alpha/2.0);
 	else /* prependicular? */
 	  overshoot = extra->middle_trans;
-- 
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