fix forward declaration

Author: soheilshahrouz

vpr/src/analytical_place/ap_draw_manager.h

@@ -10,7 +10,7 @@
 #include <string>
 
 // Forward declarations
-class PartialPlacement;
+struct PartialPlacement;
 
 // Types to indicate the type of drawing operation
 enum class APDrawType {

vpr/src/route/router_lookahead/router_lookahead_compressed_map.h

@@ -37,7 +37,7 @@ class CompressedMapLookahead : public RouterLookahead {
         VPR_THROW(VPR_ERROR_ROUTE, "CompressedMapLookahead::read unimplemented");
     }
 
-    void read_intra_cluster(const std::string& /*file*/) {
+    void read_intra_cluster(const std::string& /*file*/) override {
         VPR_THROW(VPR_ERROR_ROUTE, "CompressedMapLookahead::read_intra_cluster unimplemented");
     }
 

vpr/src/timing/PreClusterTimingManager.h

@@ -15,7 +15,7 @@
 // Forward declarations.
 class AtomLookup;
 class AtomNetlist;
-class PartialPlacement;
+struct PartialPlacement;
 class PlaceDelayModel;
 class PreClusterDelayCalculator;
 class Prepacker;