src/share/vm/c1/c1_Runtime1.cpp

*** 333,342 ****
--- 333,343 ----
  
  JRT_ENTRY(void, Runtime1::new_instance(JavaThread* thread, Klass* klass))
    NOT_PRODUCT(_new_instance_slowcase_cnt++;)
  
    assert(klass->is_klass(), "not a class");
+   Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
    instanceKlassHandle h(thread, klass);
    h->check_valid_for_instantiation(true, CHECK);
    // make sure klass is initialized
    h->initialize(CHECK);
    // allocate instance and return via TLS
*** 368,377 ****
--- 369,379 ----
  
    // Note: no handle for klass needed since they are not used
    //       anymore after new_objArray() and no GC can happen before.
    //       (This may have to change if this code changes!)
    assert(array_klass->is_klass(), "not a class");
+   Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive
    Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
    objArrayOop obj = oopFactory::new_objArray(elem_klass, length, CHECK);
    thread->set_vm_result(obj);
    // This is pretty rare but this runtime patch is stressful to deoptimization
    // if we deoptimize here so force a deopt to stress the path.
*** 384,393 ****
--- 386,396 ----
  JRT_ENTRY(void, Runtime1::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
    NOT_PRODUCT(_new_multi_array_slowcase_cnt++;)
  
    assert(klass->is_klass(), "not a class");
    assert(rank >= 1, "rank must be nonzero");
+   Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
    oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
    thread->set_vm_result(obj);
  JRT_END