Comment 3 for bug 1951031

By using the reproducer script provided in [1],

- I confirm that impish and jammy are not affected (the tests resulted in the expected behavior described in [2]);
- Both hirsute and focal are affected, as already mentioned by Lucas.

I applied the patch linked by Lucas to the hirsute and focal packages in this PPA: https://launchpad.net/~athos-ribeiro/+archive/ubuntu/php7-lp-1951031/+packages

MPs were proposed in [3] and [4]. I will follow up with filling an SRU template shortly.

[1] https://github.com/php/php-src/commit/6dd85f83f78fbafc4a90b264e577a31b59323314#diff-ec66169649c48cc98a3bb86b988d4486d2fdd7d6bf0ec85ddf3a3593bfc00e8fR4-R26
[2] https://github.com/php/php-src/commit/6dd85f83f78fbafc4a90b264e577a31b59323314#diff-ec66169649c48cc98a3bb86b988d4486d2fdd7d6bf0ec85ddf3a3593bfc00e8fR27-R32
[3] https://code.launchpad.net/~athos-ribeiro/ubuntu/+source/php7.4/+git/php7.4/+merge/412416
[4] https://code.launchpad.net/~athos-ribeiro/ubuntu/+source/php7.4/+git/php7.4/+merge/412418