[Bug fortran/67422] memcpy incorrectly used to copy (potentially) overlapping assumed-size arrays

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67422

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> memcpy is not guaranteed to work if the memory locations for a and b overlap,
> which could be the case here.

In Fortran code, they cannot be the same location and if they are then it is
undefined code.