RFR: 8377658: G1: Cleanup g1ConcurrentMark.cpp for stricter warning flags

[Leo Korinth]

On Fri, 13 Feb 2026 10:57:23 GMT, Leo Korinth <lkorinth at openjdk.org> wrote:

>> It is only fixing g1, unfortunately `barrierSetConfig.inline.hpp` does include zgc headers.
>
> I thought it was harmless enough to be passed as a g1 fix, I even kept the c style cast.

Do you think I should open an enhancement for the barrierSetConfig.inline.hpp issue?

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PR Review Comment: https://git.openjdk.org/jdk/pull/29701#discussion_r2803647124