Steve Lawrence created DAFFODIL-2703:
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Summary: Unaligned RightFill does not unparse correctly
Key: DAFFODIL-2703
URL: https://issues.apache.org/jira/browse/DAFFODIL-2703
Project: Daffodil
Issue Type: Bug
Components: Back End, Back End C-Generator
Affects Versions: 3.3.0
Reporter: Steve Lawrence
Attachments: unalignedRightFill.tdml
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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