I'm seeing two situations in Saxon 12.0 through 12.2 where XQuery output does not include error codes as in earlier Saxon versions. I'm not certain whether the behavior change is a bug or intended. The earlier behavior to report error codes was useful for automated tests of downstream applications for situations that are supposed to produce errors.

Below are small, self-contained queries that reproduce the behavior of my original two situations. If you'd like me to log them separately, let me know. Thanks!

Case 1: Does not report user-defined error code¶

Query¶

xquery version "3.1";

declare namespace xs = "http://www.w3.org/2001/XMLSchema";

declare function local:fcn($result as item()*) as item()* {
$result
};

(: the query body :)
let $result as item()* := error(xs:QName('my-error-code'))
return local:fcn($result)

Outputs¶

java -cp "C:\Program Files\Saxonica\SaxonHE11.5J\saxon-he-11.5.jar" net.sf.saxon.Query  -q:repro-issue-error-code.xq
Error on line 10 column 43 of repro-issue-error-code.xq:
  my-error-code  Error signalled by application call on error()
<?xml version="1.0" encoding="UTF-8"?>Query failed with dynamic error: Error signalled by application call on error()


java -cp "C:\Program Files\Saxonica\SaxonHE12.0J\saxon-he-12.0.jar" net.sf.saxon.Query  -q:repro-issue-error-code.xq
<?xml version="1.0" encoding="UTF-8"?>net.sf.saxon.trans.UncheckedXPathException: Error signalled by application call on error()
        at net.sf.saxon.value.SingletonClosure.iterate(SingletonClosure.java:81)
        at net.sf.saxon.expr.LocalVariableReference$LocalVariableReferenceElaborator.lambda$elaborateForPush$1(LocalVariableReference.java:214)
        at net.sf.saxon.expr.instruct.UserFunction.process(UserFunction.java:712)
        at net.sf.saxon.expr.UserFunctionCall$UserFunctionCallElaborator.lambda$elaborateForPush$5(UserFunctionCall.java:846)
        at net.sf.saxon.query.XQueryExpression.processQuery(XQueryExpression.java:499)
        at net.sf.saxon.query.XQueryExpression.run(XQueryExpression.java:473)
        at net.sf.saxon.s9api.XQueryEvaluator.run(XQueryEvaluator.java:464)
        at net.sf.saxon.Query.runQuery(Query.java:975)
        at net.sf.saxon.Query.doQuery(Query.java:444)
        at net.sf.saxon.Query.main(Query.java:106)
Caused by: net.sf.saxon.functions.Error$UserDefinedXPathException: Error signalled by application call on error()
        at net.sf.saxon.functions.Error.error(Error.java:67)
        at net.sf.saxon.functions.Error.call(Error.java:121)
        at net.sf.saxon.expr.SystemFunctionCall$SystemFunctionCallElaborator.lambda$elaborateForPull$1(SystemFunctionCall.java:608)
        at net.sf.saxon.value.SingletonClosure.asItem(SingletonClosure.java:112)
        at net.sf.saxon.value.SingletonClosure.iterate(SingletonClosure.java:72)
        ... 9 more
Fatal error during query: net.sf.saxon.trans.UncheckedXPathException: Error signalled by application call on error()

Case 2: Does not include standard error code XPDY0002¶

Query¶

xquery version "3.1";

declare function local:fcn($result as item()*) as xs:boolean {
boolean($result = 1)
};

let $result as item()* := ( count(child::element()) )
return local:fcn($result)

Outputs¶

java -cp "C:\Program Files\Saxonica\SaxonHE11.5J\saxon-he-11.5.jar" net.sf.saxon.Query  -q:repro-issue-no-context-for-child.xq
Error on line 7 column 52 of repro-issue-no-context-for-child.xq:
  XPDY0002  The context item for axis step ./element() is absent
     invoked by function call at file:/C:/.../repro-issue-no-context-for-child.xq#9
<?xml version="1.0" encoding="UTF-8"?>Query failed with dynamic error: The context item for axis step ./element() is absent


java -cp "C:\Program Files\Saxonica\SaxonHE12.0J\saxon-he-12.0.jar" net.sf.saxon.Query  -q:repro-issue-no-context-for-child.xq
<?xml version="1.0" encoding="UTF-8"?>net.sf.saxon.trans.UncheckedXPathException: The context item is absent
        at net.sf.saxon.value.SingletonClosure.iterate(SingletonClosure.java:81)
        at net.sf.saxon.expr.LocalVariableReference$LocalVariableReferenceElaborator.lambda$elaborateForPull$0(LocalVariableReference.java:205)
        at net.sf.saxon.expr.Atomizer$AtomizerElaborator.lambda$elaborateForPull$0(Atomizer.java:678)
        at net.sf.saxon.expr.GeneralComparison$GeneralComparisonElaborator.lambda$elaborateForBoolean$1(GeneralComparison.java:845)
        at net.sf.saxon.expr.elab.BooleanElaborator.lambda$elaborateForPush$1(BooleanElaborator.java:32)
        at net.sf.saxon.expr.instruct.UserFunction.process(UserFunction.java:712)
        at net.sf.saxon.expr.UserFunctionCall$UserFunctionCallElaborator.lambda$elaborateForPush$5(UserFunctionCall.java:846)
        at net.sf.saxon.query.XQueryExpression.processQuery(XQueryExpression.java:499)
        at net.sf.saxon.query.XQueryExpression.run(XQueryExpression.java:473)
        at net.sf.saxon.s9api.XQueryEvaluator.run(XQueryEvaluator.java:464)
        at net.sf.saxon.Query.runQuery(Query.java:975)
        at net.sf.saxon.Query.doQuery(Query.java:444)
        at net.sf.saxon.Query.main(Query.java:106)
Caused by: net.sf.saxon.trans.XPathException: The context item is absent
        at net.sf.saxon.expr.Expression.dynamicError(Expression.java:1460)
        at net.sf.saxon.expr.ContextItemExpression.reportAbsentContext(ContextItemExpression.java:334)
        at net.sf.saxon.expr.ContextItemExpression$ContextItemElaborator.lambda$elaborateForItem$0(ContextItemExpression.java:395)
        at net.sf.saxon.expr.ItemChecker$ItemCheckerElaborator.lambda$elaborateForItem$1(ItemChecker.java:463)
        at net.sf.saxon.expr.SimpleStepExpression$SimpleStepExprElaborator.lambda$elaborateForPull$1(SimpleStepExpression.java:185)
        at net.sf.saxon.functions.Count$CountFnElaborator.lambda$elaborateForItem$0(Count.java:135)
        at net.sf.saxon.expr.elab.ItemElaborator.lambda$elaborateForPull$0(ItemElaborator.java:36)
        at net.sf.saxon.value.SingletonClosure.asItem(SingletonClosure.java:112)
        at net.sf.saxon.value.SingletonClosure.iterate(SingletonClosure.java:72)
        ... 12 more
Fatal error during query: net.sf.saxon.trans.UncheckedXPathException: The context item is absent