RFR: 8357155: [asan] ZGC does not work

[Matthias Baesken]

On Fri, 30 May 2025 12:18:46 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> Many (all?) ZGC related jtreg tests do not work when the JDK is built with address sanitizer asan enabled (configure flag --enable-asan).
> This can be seen on SUSE Linux x86_64 and also on ppc64le , opt binaries were used.
> It has been suggested to do a workaround -  'But I think that simply adapting the zAddress_[...].cpp implementations to always select the largest heap base would go a long way for providing ASAN compatibility.'
> This seems to work nicely on x86_64 and ppc64le,  however the zgc related tests still fail on Linux aarch64 (should I exclude this platform from my patch?) .

I think we handle just x86_64 and ppc64 in this change. Should I adjust the subject ? 
Btw Axel, should I add you as contributor, makes probably sense ?

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PR Comment: https://git.openjdk.org/jdk/pull/25549#issuecomment-2929574262