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https://issues.apache.org/jira/browse/LUCENE-6760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14734947#comment-14734947
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ASF subversion and git services commented on LUCENE-6760:
---------------------------------------------------------
Commit 1701816 from [~thetaphi] in branch 'dev/branches/lucene_solr_5_3'
[ https://svn.apache.org/r1701816 ]
Backport:
LUCENE-6760: Prevent test failure in Java 9 b76+
SOLR-7958: Move TestUtil#randomWhitespace to the only Solr test that is using it
LUCENE-6760: if the list of whitspace characters changes again in a future JVM,
fail fast with a clear error that the test needs corrected -- even if jvm
assertions are disabled OR we get really lucky with the chars radnomly selected
(merge r1698227)
> TestUtil#randomWhitespace() broken for Java 9 (Unicode 7)
> ---------------------------------------------------------
>
> Key: LUCENE-6760
> URL: https://issues.apache.org/jira/browse/LUCENE-6760
> Project: Lucene - Core
> Issue Type: Test
> Environment: Java 9 build 76+
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Priority: Blocker
> Labels: Java9
> Fix For: Trunk, 5.4, 5.3.1
>
> Attachments: LUCENE-6760.patch, LUCENE-6760.patch, LUCENE-6760.patch,
> LUCENE-6760.patch
>
>
> Java 9 changed its character tables to unicode version 7.0. The table updates
> are listed here: http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/86206517258d
> Because of this, character {{\u180E}} is no longer treated as whitespace, so
> TestUtil#randomWhitespace() fails.
> I will remove this character from the list and update the documentation
> JRE_VERSION_MIGRATION.txt.
> We should maybe make this character list dynamic (e.g. TestUtil initializes
> it on static class init one time by iterating over all 16 bit characters).
> Maybe somebody else has an idea (there is already a TODO in the code about
> that).
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