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  1. Daffodil
  2. DAFFODIL-2703

Unaligned RightFill does not unparse correctly

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 3.3.0
    • None
    • None

    Description

      See the attached unalignedRightFill.tdml file for reproducible tests.

      Data is a single byte. Only the most significant bit is actual data. The remaining 7 bits are RightFill region using a fillByte value of 0xF0. So the data should always unparse to X111 0000, where the value of X comes from the infoset.

      Note that runtime1 and runtime2 have different behaviors, neither of which I think is correct:
       
       

      unalignedRightFill_01 (bit from infoset is 1)

      should unparse to 0xF0 (1111 0000)

      runtime1 unparses to 0xBF (1011 1111)

      runtime2 unparses to 0x9F (1001 1111)

       

      unalignedRightFill_02 (bit from infoset is 0)

      should unparse to 0x70 (0111 0000)

      runtime1 unaprses to 0x3F (0011 1111)

      runtime2 unparses to 0x1F (0001 1111)

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            Unassigned Unassigned
            slawrence Steve Lawrence

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