[m-rev.] for review: update to Boehm GC v8.0.6

Julien Fischer jfischer at opturion.com
Mon Nov 29 17:46:20 AEDT 2021

Hi Peter,

The subject says you are updating to version 8.0.6 but the log message
says version 8.2.0.  Which is it?

On Mon, 29 Nov 2021, Peter Wang wrote:

> I'd like to update Boehm GC at this time, and libatomic_ops with it.
> I've pushed changes to our repos:
> libatomic_ops
>    updated branch: release-7_6-mercury
>    new tag: release-7_6-mercury-20211129
> bdwgc
>    new branch: release-8_0-mercury
>    new tag: release-8_0-mercury-20211129
> The following diff updates the Mercury repository. I haven't applied it.
> The bdwgc v8.0.x branch can make use gcc/clang atomic intrinsics instead
> of libatomic_ops. Unfortunately, we would still need to keep
> libatomic_ops around for MSVC.

Recent versions of MSVC, might provide the necessary intrinsics but I
guess Boehm doesn't use them yet?

> We should be able to enable munmap support by default once the upgrade
> is done.

No objection from me.  Has the upgrade been tested much?


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