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  1. JDK
  2. JDK-8165859

gcTaskThread is missing volatile specifier and barriers for _time_stamps.

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      gcTaskThread is missing both volatile specifiers on _time_stamps, as well as acquire barriers on accesses, leading to undefined behavior when manipulating it.

      This is part of the larger CR JDK-8033552, but that CR grew too large and this was split out.

            eosterlund Erik Österlund
            eosterlund Erik Österlund
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