Merge pull request #2671 from verilog-to-routing/force_site_bounds_check

added bounds check for forced primitive site

Author: vaughnbetz

vpr/src/pack/cluster_placement.cpp

@@ -140,9 +140,15 @@ bool get_next_primitive_list(t_cluster_placement_stats* cluster_placement_stats,
                         continue;
                     }
 
-
                     /* check for force site match, if applicable */
                     if (force_site > -1) {
+                        /* check that the forced site index is within the available range */
+                        int max_site = it->second->pb_graph_node->total_primitive_count - 1;
+                        if (force_site > max_site) {
+                            VTR_LOG("The specified primitive site (%d) is out of range (max %d)\n",
+                                    force_site, max_site);
+                            break;
+                        }
                         if (force_site == it->second->pb_graph_node->flat_site_index) {
                             cost = try_place_molecule(molecule, it->second->pb_graph_node, primitives_list);
                             if (cost < HUGE_POSITIVE_FLOAT) {