RFR: 8291067: macOS should use O_CLOEXEC instead of FD_CLOEXEC [v6]

[David Holmes]

On Fri, 18 Nov 2022 15:52:35 GMT, Gerard Ziemski <gziemski at openjdk.org> wrote:

>> O_CLOEXEC is also available on macOS (__DARWIN_C_LEVEL >= 200809L), so use it same as on linux.
>
> Gerard Ziemski has updated the pull request incrementally with one additional commit since the last revision:
> 
>   rename test file to test_file.txt, so it's easy to determine the purpose of the artifact to however happens to be looking

Marked as reviewed by dholmes (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/9663