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src/hotspot/share/gc/z/zObjArrayAllocator.cpp

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*** 61,12 ***
    // cleared, therefore we can't expose the header at the end of this
    // function. Instead explicitly initialize it according to our needs.
  
    // Signal to the ZIterator that this is an invisible root, by setting
    // the mark word to "marked". Reset to prototype() after the clearing.
!   arrayOopDesc::set_mark(mem, markWord::prototype().set_marked());
!   arrayOopDesc::release_set_klass(mem, _klass);
    assert(_length >= 0, "length should be non-negative");
    arrayOopDesc::set_length(mem, _length);
  
    // Keep the array alive across safepoints through an invisible
    // root. Invisible roots are not visited by the heap iterator
--- 61,16 ---
    // cleared, therefore we can't expose the header at the end of this
    // function. Instead explicitly initialize it according to our needs.
  
    // Signal to the ZIterator that this is an invisible root, by setting
    // the mark word to "marked". Reset to prototype() after the clearing.
!   if (UseCompactObjectHeaders) {
!     oopDesc::release_set_mark(mem, _klass->prototype_header().set_marked());
+   } else {
+     arrayOopDesc::set_mark(mem, markWord::prototype().set_marked());
+     arrayOopDesc::release_set_klass(mem, _klass);
+   }
    assert(_length >= 0, "length should be non-negative");
    arrayOopDesc::set_length(mem, _length);
  
    // Keep the array alive across safepoints through an invisible
    // root. Invisible roots are not visited by the heap iterator

*** 148,9 ***
    mem_zap_end_padding(mem);
  
    ZThreadLocalData::clear_invisible_root(_thread);
  
    // Signal to the ZIterator that this is no longer an invisible root
!   oopDesc::release_set_mark(mem, markWord::prototype());
  
    return cast_to_oop(mem);
  }
--- 152,13 ---
    mem_zap_end_padding(mem);
  
    ZThreadLocalData::clear_invisible_root(_thread);
  
    // Signal to the ZIterator that this is no longer an invisible root
!   if (UseCompactObjectHeaders) {
+     oopDesc::release_set_mark(mem, _klass->prototype_header());
+   } else {
+     oopDesc::release_set_mark(mem, markWord::prototype());
+   }
  
    return cast_to_oop(mem);
  }
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