8314488: Compiling the JDK with C++17

[kimbarrett]

I'm hijacking the PR mechanism as a way to discuss new C++17 features that can
be more easily structured and captured than bare email. Once discussion
settles down I'll turn the results into HotSpot Style Guide changes. I don't
intend to integrate any version of this document to the OpenJDK repository.

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Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8314488: Compiling the JDK with C++17 (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/25992/head:pull/25992
$ git checkout pull/25992

Update a local copy of the PR:
$ git checkout pull/25992
$ git pull https://git.openjdk.org/jdk.git pull/25992/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 25992

View PR using the GUI difftool:
$ git pr show -t 25992

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/25992.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back kbarrett! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

@kimbarrett The following label will be automatically applied to this pull request:

• build

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[kimbarrett]

/label remove build
/label add hotspot

[openjdk]

@kimbarrett
The build label was successfully removed.

[openjdk]

@kimbarrett
The hotspot label was successfully added.

[openjdk]

@kimbarrett Please do not rebase or force-push to an active PR as it invalidates existing review comments. Note for future reference, the bots always squash all changes into a single commit automatically as part of the integration. See OpenJDK Developers’ Guide for more information.

[mlbridge]

Webrevs

• 00: Full (3dcf8265)