Adds testcase for issue https://bugs.openjdk.org/browse/JDK-8371187. I have verified on s390 before https://github.com/openjdk/jdk/pull/28425 integration and this test fails, but with the patch it passes on s390x.
------------- Commit messages: - testcase Changes: https://git.openjdk.org/jdk/pull/30611/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=30611&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8381787 Stats: 84 lines in 1 file changed: 84 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/30611.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/30611/head:pull/30611 PR: https://git.openjdk.org/jdk/pull/30611
