assertion failure when evaluating query

[pfps]

I'm running a benchmark group on my local machine with the version of QLever from October, qlever 0.5.8, and one of the queries is

SELECT * WHERE { ?x1 ((http://www.wikidata.org/prop/direct/P31/(http://www.wikidata.org/prop/direct/P279))|(http://www.wikidata.org/prop/direct/P106/(http://www.wikidata.org/prop/direct/P279))) http://www.wikidata.org/entity/Q5 } LIMIT 10000000

When running this query QLever reported

Assertion !subset.empty() && subset.back() < numColumns() failed. Please report this to the developers. In file "/home/local/qlever/qlever-code/src/engine/idTable/IdTable.h " at line 567

This is mostly just to document old behaviour, as it appears that the current version does not produce this error. Feel free to close immediately.

[hannahbast]

@pfps The query is malformed (also for WDQS), could you please provide a properly formatted version of the query, so that it's clear, which query you mean?

PS: Always good to provide the QLever link, too. That is, something like https://qlever.cs.uni-freiburg.de/wikidata/pRh2dp .

[pfps]

Hah! The angle brackets disappear! I knew that, but forgot.

Here a link
https://qlever.cs.uni-freiburg.de/wikidata/CQ7XZJ
and the query protected from this munging:

SELECT * WHERE { 
?x1 
((<http://www.wikidata.org/prop/direct/P31>/(<http://www.wikidata.org/prop/direct/P279>)*)|(<http://www.wikidata.org/prop/direct/P106>/(<http://www.wikidata.org/prop/direct/P279>)*)) 
<http://www.wikidata.org/entity/Q5> 
} LIMIT 10000000