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  1. JDK
  2. JDK-4225358

reproducable bug, disappears with jit disabled

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    • Icon: Bug Bug
    • Resolution: Won't Fix
    • Icon: P4 P4
    • None
    • 1.2.0
    • vm-legacy



      Name: tb29552 Date: 03/30/99


      A graphics application of mine misbehaves in a
      very visible way. The misbehavior disappears
      when JIT is disabled. I have full sources and
      can point you to the exact lines of code.

      There is a test, just use appletviewer on
      http://www.andromeda.com/people/ddyer/loa/ and click on
      any of game pieces. Then try it again with JIT disabled,
      QED.

      I"m afraid that I can't produce the problem with an application
      significantly smaller that the whole. I presume this means that
      the JIT has complex, rather than simple, reasons for this particular
      misbehavior.

      As I said, I can supply the entire application, and point you
      to the exact line of code that is producing the incorrect result.

      without jit:
      ss 26
      bS 26 4
      A 312 212 156 212 4 3.141592653589793
      aS 26 4

      with jit:
      ss 26
      bS 26 82184892
      A 312 212 156 212 82184892 3.141592653589793
      aS 26 82184892

      the errant number 82184892 appears as a result
      of an integer division.

      If you are interested in fixing this problem,
      I will work with you.
      (Review ID: 42850)
      ======================================================================

            Unassigned Unassigned
            tbell Tim Bell
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