RFR: 8297138: UB leading to crash in Amalloc with optimized builds

[Coleen Phillimore]

On Wed, 23 Nov 2022 12:52:04 GMT, Afshin Zafari <duke at openjdk.org> wrote:

> 8297138: UB leading to crash in Amalloc with optimized builds

I think the conditional compilation is offensive, and it caused this bug, which makes it more offensive. :)

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PR: https://git.openjdk.org/jdk/pull/11320