[jdk8u-dev] RFR: 8157758: JDK9 does not compile on Linux with GCC 6.1 because left-shifting a negative number has undefined behavior [v5]

[Severin Gehwolf]

On Tue, 16 Dec 2025 01:07:50 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

>> Hi all,
>> 
>> This pull request contains a backport of commit [4abb5e4a](https://github.com/openjdk/jdk/commit/4abb5e4aafe05871a07d510f002a38298fe4dbb2) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
>> 
>> The commit being backported was authored by Alex Henrie on 23 Jun 2016 and was reviewed by Kim Barrett and Max Ockner.
>> 
>> Thanks!
>
> Sergey Bylokhov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into backport-mrserb-4abb5e4a-master
>  - Merge branch 'openjdk:master' into backport-mrserb-4abb5e4a-master
>  - Merge branch 'openjdk:master' into backport-mrserb-4abb5e4a-master
>  - Merge branch 'openjdk:master' into backport-mrserb-4abb5e4a-master
>  - Backport 4abb5e4aafe05871a07d510f002a38298fe4dbb2

Note that we don't have MacOSX GHA being run here as the old runners have been removed. Work is under way to re-instate those.

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PR Comment: https://git.openjdk.org/jdk8u-dev/pull/682#issuecomment-3723288664