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  1. JDK
  2. JDK-8043722

Swapped usage of idx_t and bm_word_t types in parMarkBitMap.cpp

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P5
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
      gc
    • Resolved In Build:
      b22

      Backports

        Description

        From http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-May/014018.html

        I've created a patch [1] to fix swapped usage of idx_t and bm_word_t
        types in
        hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.cpp

        The code currently uses a pointer to idx_t as an argument to
         BitMap::set_map(bm_word_t* map) which fails on s390.

        For most platforms the idx_t and bm_word_t types are effectively the
        same, so the interchange is uncaught, but on s390 (32-bit) the size_t is
        "unsigned long" which makes it incompatible with "unsigned int".

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                • Assignee:
                  tschatzl Thomas Schatzl
                  Reporter:
                  tschatzl Thomas Schatzl
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                  • Created:
                    Updated:
                    Resolved: