hg: jdk/sandbox: 8230743: StringJoiner does not handle too large strings correctly

[chris.hegarty at oracle.com]

Changeset: 8c5fd0b6fc17
Author:    jlaskey
Date:      2020-06-05 09:37 -0300
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8c5fd0b6fc17

8230743: StringJoiner does not handle too large strings correctly
Reviewed-by: rriggs, psandoz, martin

! src/java.base/share/classes/java/util/StringJoiner.java
! test/jdk/java/util/StringJoiner/MergeTest.java
! test/jdk/java/util/StringJoiner/StringJoinerTest.java