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  1. JDK
  2. JDK-8295402

G1: Tighten assertion in G1ScanHRForRegionClosure::scan_heap_roots

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    • Enhancement
    • Resolution: Fixed
    • P4
    • 20
    • 20
    • hotspot
    • gc
    • b21

    Description

      ```
      size_t first_scan_idx = scan.find_next_dirty();
      ...
      assert(*_ct->byte_for_index(region_card_base_idx + first_scan_idx) <= 0x1
      ```

      The first_scan_idx points to a dirty card, so the assert can be `== 0x0`, aka `CardTable::dirty_card_val()`.

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              ayang Albert Yang
              ayang Albert Yang
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                Updated:
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