When a non-mutating method returns a pointer to a field, sometimes that pointer is corrupted #942
Description
Please describe the bug
This is something I've noticed a few times now: if you have some method fn mut foo { @a.field_containing_extern_value } then all is well, but when you change the method to fn foo { ... } it seems the pointer gets corrupted somehow. To further complicate things this doesn't always seem to be the case.
We'll need a standalone way to reproduce this first, then we need to ensure that the behavior is the same for both fn mut and fn methods (i.e. no broken pointers).
Operating system
Fedora
Inko version
main