From bd81940434e5de391ffe9c719b5d2fed7afecd77 Mon Sep 17 00:00:00 2001
From: Gellule Xg <gellule.xg@gmail.com>
Date: Fri, 13 Jan 2012 08:55:51 -1000
Subject: 2geom: Fixed an infinite loop where 2geom was trying to find the
 roots of an identically zero bezier.

Fixed bugs:
  - https://launchpad.net/bugs/916171

(bzr r10880)
---
 src/2geom/solve-bezier.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/2geom/solve-bezier.cpp b/src/2geom/solve-bezier.cpp
index b7c01b1f7..0a9f0e310 100644
--- a/src/2geom/solve-bezier.cpp
+++ b/src/2geom/solve-bezier.cpp
@@ -142,6 +142,10 @@ Bezier::find_bezier_roots(std::vector<double> &solutions,
     //convex_hull_marching(bz, bz, solutions, left_t, right_t);
     //return;
     
+    //A constant bezier, even if identically zero, has no roots
+    if (bz.isConstant())
+        return;
+    
     while(bz[0] == 0) {
         debug(std::cout << "deflate\n");
         bz = bz.deflate();
-- 
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