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https://issues.apache.org/jira/browse/LUCENE-8034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16263528#comment-16263528
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ASF subversion and git services commented on LUCENE-8034:
---------------------------------------------------------
Commit 6b328dcd4f90f4b61961b1d3a16629b4ae0c3ece in lucene-solr's branch
refs/heads/branch_7x from Mike McCandless
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=6b328dc ]
LUCENE-8034: use subtraction instead of addition to sidestep int overflow in
SpanNotQuery
> SpanNotWeight returns wrong results due to integer overflow
> -----------------------------------------------------------
>
> Key: LUCENE-8034
> URL: https://issues.apache.org/jira/browse/LUCENE-8034
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/query/scoring, core/search
> Reporter: Hari Menon
> Priority: Minor
> Labels: newbie, patch
> Fix For: master (8.0), 7.2
>
> Attachments: LUCENE-8034.patch
>
>
> In SpanNotQuery, there is an acceptance condition:
> {code:java}
> if (candidate.endPosition() + post <= excludeSpans.startPosition()) {
> return AcceptStatus.YES;
> }
> {code}
> This overflows in case `candidate.endPosition() + post > Integer.MAX_VALUE`.
> I have a fix for this which I am working on. Basically I am flipping the add
> to a subtract.
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