RFR (JDK11/JAXP/java.xml) 8198548: Initialization race in com.sun.org.apache.xerces.internal.impl.xpath.regex.Token.getRange() on Token.categories

[Lance Andersen]

Hi Joe,

The current webrev looks fine.

> On May 16, 2018, at 7:40 PM, Joe Wang <huizhe.wang at oracle.com> wrote:
> 
> Hi,
> 
> Please review a fix on synchronization. The real change is the double-checked locking, all others are s/Token.categories/tmpMap/g.
> 
> All JAXP tests passed. Before the fix, the test attached to JBS failed only once for me after 10,000 runs and then a few 1000 runs (impossible to get one with only 20 runs as the comment mentioned).  The author of the original report put the actual pass rate at 99.994%. After the fix then, in theory it should be 100%, I've made a 100,000 run without seeing a failure.
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8198548
> webrevs: http://cr.openjdk.java.net/~joehw/jdk11/8198548/webrev/
> 
> Thanks,
> Joe

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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
Oracle Java Engineering 
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