[Bug c++/67557] Calling copy constructor of base class in constructor of derived class produces crashing code

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67557

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
See PR67519 for a possible future compiler warning.