RFR: 8323552: AbstractMemorySegmentImpl#mismatch returns -1 when comparing distinct areas of the same instance of MemorySegment [v3]

[Jorn Vernee]

On Thu, 11 Jan 2024 16:21:38 GMT, Peter Levart <plevart at openjdk.org> wrote:

>> I belive there is a bug in `AbstractMemorySegmentImpl#mismatch` method. It returns `-1` (meaning that regions are equal) when passing the same instance of MemorySegment as both `srcSegment` and `dstSegment` parameters regardless of whether `srcFromOffset` and `dstFromOffset` as well as `srcToOffset` and `dstToOffset` are also equal.
>> 
>> Am I right?
>
> Peter Levart has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove special-case check from instance method - test pending

@plevart Are you planning to finish this? (add a test). Or maybe someone else can take over and do the rest?

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PR Comment: https://git.openjdk.org/jdk/pull/17354#issuecomment-1934640546