Replace abort with warning.

diff --git a/lib/dotgen/rank.c b/lib/dotgen/rank.c
index 0b9ed336d0c396f8f0ff7b92d29e7641325ab12e..c2998fb24086db943b3a956f757ca12464f77cfa 100644 (file)
--- a/lib/dotgen/rank.c
+++ b/lib/dotgen/rank.c
@@ -935,7 +935,7 @@ static void strong(graph_t * g, node_t * t, node_t * h, edge_t * orig)
        (e = agfindedge(g, h, t)) || (e = agedge(g, t, h, 0, 1)))
        merge(e, ED_minlen(orig), ED_weight(orig));
     else
-       abort();
+       agerr(AGERR, "ranking: failure to create strong constraint edge between nodes %s and %s\n", agnameof(
 }
 
 static void weak(graph_t * g, node_t * t, node_t * h, edge_t * orig)