src/hotspot/share/asm/assembler.hpp

*** 157,166 ****
--- 157,174 ----
    }
  
    Label() {
      init();
    }
+ 
+   ~Label() {
+     assert(is_bound() || is_unused(), "Label was never bound to a location, but it was used as a jmp target");
+   }
+ 
+   void reset() {
+     init(); //leave _patch_overflow because it points to CodeBuffer.
+   }
  };
  
  // A NearLabel must be bound to a location near its users. Users can
  // optimize on this information, e.g. generate short branches.
  class NearLabel : public Label {