src/share/vm/opto/parse1.cpp

rev 9165 : 8141551: C2 can not handle returns with inccompatible interface arrays

*** 989,1005 ****
      Node*       ret_phi  = _gvn.transform( _exits.argument(0) );
      if (!_exits.control()->is_top() && _gvn.type(ret_phi)->empty()) {
        // In case of concurrent class loading, the type we set for the
        // ret_phi in build_exits() may have been too optimistic and the
        // ret_phi may be top now.
! #ifdef ASSERT
        {
          MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag);
!         assert(ret_type->isa_ptr() && C->env()->system_dictionary_modification_counter_changed(), "return value must be well defined");
!       }
! #endif
        C->record_failure(C2Compiler::retry_class_loading_during_parsing());
      }
      _exits.push_node(ret_type->basic_type(), ret_phi);
    }
  
    // Note:  Logic for creating and optimizing the ReturnNode is in Compile.
--- 989,1010 ----
      Node*       ret_phi  = _gvn.transform( _exits.argument(0) );
      if (!_exits.control()->is_top() && _gvn.type(ret_phi)->empty()) {
        // In case of concurrent class loading, the type we set for the
        // ret_phi in build_exits() may have been too optimistic and the
        // ret_phi may be top now.
!       // Otherwise, we've encountered an error and have to mark the method as
!       // not compilable. Just using an assertion instead would be dangerous
!       // as this could lead to an infinite compile loop in non-debug builds.
        {
          MutexLockerEx ml(Compile_lock, Mutex::_no_safepoint_check_flag);
!         if (C->env()->system_dictionary_modification_counter_changed()) {
            C->record_failure(C2Compiler::retry_class_loading_during_parsing());
+         } else {
+           C->record_method_not_compilable("Can't determine return type.");
+         }
+       }
+       return;
      }
      _exits.push_node(ret_type->basic_type(), ret_phi);
    }
  
    // Note:  Logic for creating and optimizing the ReturnNode is in Compile.