RFR: 8314488: Compile the JDK as C++17 [v5]

[Martin Doerr]

On Wed, 10 Jan 2024 13:11:38 GMT, Julian Waters <jwaters at openjdk.org> wrote:

>> Compile the JDK as C++17, enabling the use of all C++17 language features
>
> Julian Waters has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove unnecessary -std=c++17 option in Lib.gmk

Regarding https://github.com/TheShermanTanker/jdk/actions/runs/7070564987/job/19247370401, could it be that the adlc build didn't get the correct C++ version flags? It doesn't look like a clang 13 specific problem.

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PR Comment: https://git.openjdk.org/jdk/pull/14988#issuecomment-1886947773