RFR: 8340205: Native linker allows MemoryLayout consisting of only PaddingLayout [v8]

[Per Minborg]

On Mon, 4 Nov 2024 12:15:53 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> Also, don't we already check the alignment before when calling `checkMemberOffset`? Why is it checked again here?

Good catch.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21041#discussion_r1829425363