RFR: 8281560: Matcher.hitEnd returns unexpected results in presence of CANON_EQ flag. [v2]

[Jaikiran Pai]

On Tue, 8 Mar 2022 04:20:17 GMT, Ian Graves <igraves at openjdk.org> wrote:

>> test/jdk/java/util/regex/RegExTest.java line 4568:
>> 
>>> 4566: 
>>> 4567:         var matcher1 = Pattern.compile(pat1).matcher(testInput);
>>> 4568:         var matcher2 = Pattern.compile(pat2).matcher(testInput);
>> 
>> Hello Ian,
>> The JBS issue notes that the bug is only noticed when the `Pattern.CANON_EQ` is used. The javadoc of this `CANON_EQ` states that this isn't enabled by default. Do you think this test should also include matchers which use Pattern(s) with this `CANON_EQ` explicitly enabled?
>
> Oh wow yes. Thanks for this catch. I was rewriting the tests to fit this mold and left the flags out. Added them back in. Thanks again!

Thank you Ian, the changed version of the test looks good.

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PR: https://git.openjdk.java.net/jdk/pull/7466