anticipate failure from layout

Related to #1801.

diff --git a/lib/fdpgen/layout.c b/lib/fdpgen/layout.c
index c13ab7fb9910e509ae3da19d302b77ec73b63131..e37a00d30212edb897a0d221e356db80fa48793c 100644 (file)
--- a/lib/fdpgen/layout.c
+++ b/lib/fdpgen/layout.c
@@ -1048,7 +1048,10 @@ static int fdpLayout(graph_t * g)
     layout_info info;
 
     init_info(g, &info);
-    layout(g, &info);
+    int r = layout(g, &info);
+    if (r != 0) {
+        return r;
+    }
     setClustNodes(g);
     evalPositions(g,g);