From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 24 Apr 2021 03:06:51 +0000 (-0700)
Subject: anticipate failure from decide_point
X-Git-Tag: 2.47.2~13^2~23
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1be1bab501e0e398b24020810f541ac1adca04a0;p=graphviz

anticipate failure from decide_point

Related to #1801.
---

diff --git a/lib/ortho/ortho.c b/lib/ortho/ortho.c
index 81d1e61d1..becbf37a0 100644
--- a/lib/ortho/ortho.c
+++ b/lib/ortho/ortho.c
@@ -1028,10 +1028,14 @@ addPEdges (channel* cp, maze* mp)
 			    dir = 1;
 		    }
 
-		    decide_point(&p, segs[i], segs[j], 0, dir);
+		    if (decide_point(&p, segs[i], segs[j], 0, dir) != 0) {
+			return -1;
+		    }
 		    hops.a = p.a;
 		    prec1 = p.b;
-		    decide_point(&p, segs[i], segs[j], 1, 1-dir);
+		    if (decide_point(&p, segs[i], segs[j], 1, 1-dir) != 0) {
+			return -1;
+		    }
 		    hops.b = p.a;
 		    prec2 = p.b;