From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 24 Apr 2021 02:58:51 +0000 (-0700)
Subject: anticipate failure from add_edges_in_G
X-Git-Tag: 2.47.2~13^2~29
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e76117cd3fa2572cd89752d671d1c19d115723d8;p=graphviz

anticipate failure from add_edges_in_G

Related to #1801.
---

diff --git a/lib/ortho/ortho.c b/lib/ortho/ortho.c
index 2c3746b3f..0b847acc0 100644
--- a/lib/ortho/ortho.c
+++ b/lib/ortho/ortho.c
@@ -780,7 +780,9 @@ add_np_edges (Dt_t* chans)
 	for (l2 = dtflatten (lp); l2; l2 = dtlink(lp,l2)) {
 	    cp = (channel*)l2;
 	    if (cp->cnt)
-		add_edges_in_G(cp);
+		if (add_edges_in_G(cp)) {
+		  return -1;
+		}
    	}
     }