Try to upgrade your perl installation and used modules to the newest versions. Make sure there are no remainders of the old installation that might interfere with the new one.

If the segfault doesn't go away, try the following:

Create a copy of your whole project. In the copy, remove as many things as possible while still getting the segfault.

When removing a single statement causes the segfault to go away, you're in a good position to identify the components involved in the segfault. If there's an XS module involved, it might cause the segfault. Either debug it, or search for a pure perl alternative.

If no XS module is involved, submit a bug report against perl.