src/share/vm/runtime/frame.cpp

@@ -1004,10 +1004,11 @@
   }
 
   virtual void handle_oop_offset() {
     // Extract low order register number from register array.
     // In LP64-land, the high-order bits are valid but unhelpful.
+    assert(_offset < _arg_size, "out of bounds");
     VMReg reg = _regs[_offset].first();
     oop *loc = _fr.oopmapreg_to_location(reg, _reg_map);
     _f->do_oop(loc);
   }
 

@@ -1020,15 +1021,11 @@
     _offset    = 0;
     _has_receiver = has_receiver;
     _has_appendix = has_appendix;
     _fr        = fr;
     _reg_map   = (RegisterMap*)reg_map;
-    _arg_size  = ArgumentSizeComputer(signature).size() + (has_receiver ? 1 : 0) + (has_appendix ? 1 : 0);
-
-    int arg_size;
-    _regs = SharedRuntime::find_callee_arguments(signature, has_receiver, has_appendix, &arg_size);
-    assert(arg_size == _arg_size, "wrong arg size");
+    _regs = SharedRuntime::find_callee_arguments(signature, has_receiver, has_appendix, &_arg_size);
   }
 
   void oops_do() {
     if (_has_receiver) {
       handle_oop_offset();