8313882: Fix -Wconversion warnings in runtime code

[shipilev]

Unclean backport to provide cleaner ground for future backports.

There were two minor conflicts in attachListener.cpp and globals.hpp.

Additional testing:

• Linux x86_64 server fastdebug, all

---

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
• JDK-8313882 needs maintainer approval

Issue

• JDK-8313882: Fix -Wconversion warnings in runtime code (Bug - P4)

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/788/head:pull/788
$ git checkout pull/788

Update a local copy of the PR:
$ git checkout pull/788
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/788/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 788

View PR using the GUI difftool:
$ git pr show -t 788

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/788.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back shade! 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]

This backport pull request has now been updated with issue from the original commit.

[mlbridge]

Webrevs

• 00: Full (9483b239)

[openjdk]

⚠️ @shipilev This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.