8.6.0alpha2+ segfault on arm32v6 (Alpine)

[yosifkit]

The images for 8.6.0alpha2 are failing to build on arm32v6 in Alpine. The failure is observed as a segfault. They will continue to fail on alpha3 (manually tested).

It is fixed by php/php-src#22751. Should we drop the architecture from 8.6-rc until a fix is applied to the pre-releases? Or at least drop from alpha2 and the just released alpha3?

Build log:

Generating phar.php
make: [Makefile:379: ext/phar/phar.php] Segmentation fault (core dumped) (ignored)
Generating phar.phar
Segmentation fault (core dumped)
chmod: cannot access 'ext/phar/phar.phar': No such file or directory
make: [Makefile:387: ext/phar/phar.phar] Error 1 (ignored)
[...]
+ php --version
[...] did not complete successfully: exit code: 139

Full build logs:

• cli: https://doi-janky.infosiftr.net/job/meta/job/arm32v6/job/build/30467/consoleFull
• fpm: https://doi-janky.infosiftr.net/job/meta/job/arm32v6/job/build/30468/consoleFull
• zts: https://doi-janky.infosiftr.net/job/meta/job/arm32v6/job/build/30469/consoleFull