Brandon Sloane created DAFFODIL-2065:
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Summary: Incorrectly attempting to cast signed to unsigned type
Key: DAFFODIL-2065
URL: https://issues.apache.org/jira/browse/DAFFODIL-2065
Project: Daffodil
Issue Type: Bug
Components: Back End
Affects Versions: 2.2.0
Environment: Ubuntu 18.04.1 LTS
Reporter: Brandon Sloane
Attachments: test.dfdl.xsd
When adding a signed and unsigned type, Daffodil attempts to cast the signed
value to unsigned. The correct behaviour would be to cast the unsigned to
signed.
When running the attached schema on an empty file, the following error is
produced:
{quote}[error] Schema Definition Error: Cannot convert '-1' from Long type to
UnsignedInt (Negative value -1 cannot be converted to an unsigned int.).
Schema context: element reference tns:x Location line 3 in
file:/home/bsloane/Documents/incubator-daffodil/test/test.dfdl.xsd
The relevent piece of schema is:
<xs:element name="x" type="xs:int" dfdl:inputValueCalc="\{ xs:unsignedInt(1) +
(-1) }" />
{quote}
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