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src/hotspot/share/prims/unsafe.cpp

roman_version
   oop x = JNIHandles::resolve(x_h);
   oop e = JNIHandles::resolve(e_h);
   oop p = JNIHandles::resolve(obj);
   assert_field_offset_sane(p, offset);
   oop ret = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e);
-  return ret == e;
+  return oopDesc::equals(ret, e);
 } UNSAFE_END
 
 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) {
   oop p = JNIHandles::resolve(obj);
   if (p == NULL) {
    
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