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Bug #4765
closedNPE in LoopLifter (from StackOverflow)
Start date:
2020-09-29
Due date:
% Done:
100%
Estimated time:
Legacy ID:
Applies to branch:
10, 9.9, trunk
Fix Committed on Branch:
10, 9.9, trunk
Description
From StackOverflow, https://stackoverflow.com/questions/64114488/
declare function local:test($input as element(input)) as element(output)
{
<output>
<details>
<service>
{
for $i in 1 to count($input/foo)
return
for $j in 1 to count($input/bar)
return if ($input/foo[$i]/data = 'A' and $input/baz[$i]/type = 'B')
then <result/>
else ()
}
</service>
</details>
</output>
};
declare variable $input as element(input) external := <input>
</input>;
local:test($input)
raises NPE:
java.lang.NullPointerException
at net.sf.saxon.expr.parser.LoopLifter.markDependencies(LoopLifter.java:168)
at net.sf.saxon.expr.parser.LoopLifter.gatherInfo(LoopLifter.java:112)
at net.sf.saxon.expr.parser.LoopLifter.gatherInfo(LoopLifter.java:122)
at net.sf.saxon.expr.parser.LoopLifter.gatherInfo(LoopLifter.java:122)
at net.sf.saxon.expr.parser.LoopLifter.gatherInfo(LoopLifter.java:122)
...
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