RFR: 8303948: HsErrFileUtils.checkHsErrFileContent() fails to check the last pattern.

[David Holmes]

On Fri, 10 Mar 2023 09:33:10 GMT, Varada M <duke at openjdk.org> wrote:

> When last pattern in deque [positivePatternStack] is not matching in HsErrFile, it comes out of the loop and check whether the positivePatternStack is empty or not, which turns to be empty because the pollFirst() removes the pattern. 
> 
> This has been noticed in the TestSigInfoInHsErrFile.java where the segfault address for AIX is set as "0x0*1400" instead of "0xffffffffffffffff", which should throw the expected error but the error is neglected due to empty deque and the test is passed. 
> 
> JBS issue : [8303948](https://bugs.openjdk.org/browse/JDK-8303948)

Hotspot changes, including tests, require two reviewers. I'll try to get someone else to review and sponsor once done.

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PR: https://git.openjdk.org/jdk/pull/12970