Find long-term alternative for flag -Wno-stringop-overread

[HenrZu]

Motivation / Current Behaviour

The flag helps use to ignore false warnings but may also ignore real warnings. Using older gcc versions (9) and valgrind, everything seems fine for now despite the death tests. However, in the future, this needs a better solution.

Enhancement description

Alternative so we can remove the flag.

Additional context

No response

Checklist

• [x] Attached labels, especially loc:: or model:: labels.
• [x] Linked to project