Invalid code generated by C2 compiler in OpenJDK 21

[Andrew Haley]

On 12/18/23 10:08, Antoine DESSAIGNE wrote:

 >
 > Once the reference to Interval is copied into my local variable
 > storedValueVT, no change on the other class can change it.

I'm not sure about that. C2 contains logic to rematerialize a value
rather than spilling, if it's cheaper. That could be happening here.
At least, I know of no place in the JMM that forbids it.

As an experiment, you could try making validTime volatile.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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