RFR: 8369393: NMT: poison the canaries of malloc header under ASAN build [v20]

[Johan Sjölen]

On Fri, 14 Nov 2025 13:16:35 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> ... compared to a simple const_cast?

I saw that too a week or so ago. I thought the same, but I haven't prioritized putting up the PR.


> Not in a production server. In production as in "trying to find errors in real production scenarios" where the JVM lives for a while. Think a long-running server app that only at certain points in its load hits errors. To do these tests, the app still needs to be somewhat reasonably fast. (like with JIT- most real-world scenarios are difficult to reproduce without a JIT, since you never even get there).

Aha, yes, that's more reasonable and inline with my previous beliefs.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27685#discussion_r2528211542