RFR: 8303040: linux PPC64le: Implementation of Foreign Function & Memory API (Preview) [v2]

[Martin Doerr]

On Wed, 22 Feb 2023 18:31:45 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Clean fix for NativeMemorySegmentImpl issue with byteSize 0.
>
> src/java.base/share/classes/java/lang/foreign/MemorySegment.java line 1359:
> 
>> 1357:         long size = elementCount * srcElementLayout.byteSize();
>> 1358:         srcImpl.checkAccess(srcOffset, size, true);
>> 1359:         if (dstImpl instanceof NativeMemorySegmentImpl && dstImpl.byteSize() == 0) {
> 
> As Jorn said, this change is not acceptable, as it allows bulk copy disregarding the segment real size. In such cases, the issue is always a missing unsafe resize somewhere in the linker code.

Removed this workaround. I'm glad to get rid of it.

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PR: https://git.openjdk.org/jdk/pull/12708