From: Emden Gansner <emdenrg@google.com>
Date: Tue, 1 Mar 2016 19:29:56 +0000 (-0500)
Subject: Fix infinite loop in routespl when fdp uses compound edges.
X-Git-Tag: TRAVIS_CI_BUILD_EXPERIMENTAL~24
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2df8647e5dc60f1d1cadc0a880ea02b8febda518;p=graphviz

Fix infinite loop in routespl when fdp uses compound edges.
---

diff --git a/lib/common/routespl.c b/lib/common/routespl.c
index f70661997..729daf31f 100644
--- a/lib/common/routespl.c
+++ b/lib/common/routespl.c
@@ -944,7 +944,7 @@ makeStraightEdge(graph_t * g, edge_t * e, int et, splineInfo* sinfo)
 
     e_cnt = 1;
     e0 = e;
-    while ((e0 = ED_to_virt(e0))) e_cnt++;
+    while ((e0 != ED_to_virt(e0)) && (e0 = ED_to_virt(e0))) e_cnt++;
 
     if (e_cnt <= MAX_EDGE)
 	edges = elist;