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src/hotspot/share/gc/parallel/psParallelCompact.cpp

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*** 1059,10 ***
--- 1059,14 ---
    //
    // Need to fill in the gap only if it's smaller than min-obj-size, and the
    // filler obj will extend to next region.
  
    // Note: If min-fill-size decreases to 1, this whole method becomes redundant.
+   if (UseCompactObjectHeaders) {
+     // The gap is always equal to min-fill-size, so nothing to do.
+     return;
+   }
    assert(CollectedHeap::min_fill_size() >= 2, "inv");
  #ifndef _LP64
    // In 32-bit system, each heap word is 4 bytes, so MinObjAlignment == 2.
    // The gap is always equal to min-fill-size, so nothing to do.
    return;
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