add a return value to layout

Related to #1801.

diff --git a/lib/fdpgen/layout.c b/lib/fdpgen/layout.c
index f7aace78a5519a085bb73eaf4658962f70d9f91f..c13ab7fb9910e509ae3da19d302b77ec73b63131 100644 (file)
--- a/lib/fdpgen/layout.c
+++ b/lib/fdpgen/layout.c
@@ -830,8 +830,7 @@ setClustNodes(graph_t* root)
  * Add edges per components to get better packing, rather than
  * wait until the end.
  */
-static 
-void layout(graph_t * g, layout_info * infop)
+static int layout(graph_t * g, layout_info * infop)
 {
     point *pts = NULL;
     graph_t *dg;
@@ -869,7 +868,10 @@ void layout(graph_t * g, layout_info * infop)
            if (ND_clust(n)) {
                pointf pt;
                sg = expandCluster(n, cg);      /* attach ports to sg */
-               layout(sg, infop);
+               int r = layout(sg, infop);
+               if (r != 0) {
+                    return r;
+               }
                ND_width(n) = BB(sg).UR.x;
                ND_height(n) = BB(sg).UR.y;
                pt.x = POINTS_PER_INCH * BB(sg).UR.x;
@@ -950,6 +952,8 @@ void layout(graph_t * g, layout_info * infop)
 #ifdef DEBUG
     decInd();
 #endif
+
+    return 0;
 }
 
 /* setBB;