[jdk8u-dev] RFR: 8211804: Constant AO_UNUSED_MBZ uses left shift of negative value

[Paul Hohensee]

On Wed, 19 Nov 2025 17:47:43 GMT, Zdenek Zambersky <zzambers at openjdk.org> wrote:

> Backport fixes left shift on negative value which is undefined behavior. This is required to build on newer clang (macos). See also [backport of JDK-8157758](https://github.com/openjdk/jdk8u-dev/pull/682).
> 
> File has different path on JDK 8, but changes applied cleanly.

Marked as reviewed by phh (Reviewer).

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PR Review: https://git.openjdk.org/jdk8u-dev/pull/722#pullrequestreview-3484792856