[Bug fortran/57696] Defined assignment for components not used when those are ALLOCATABLE

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57696

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
>From Fortran 2008, "7.2.1.3 Interpretation of intrinsic assignments", paragraph
13 (excerpt):

"For a noncoarray allocatable component the following sequence of operations is
applied.
(1) If the component of the variable is allocated, it is deallocated.
(2) If the component of the value of expr is allocated, the corresponding
    component of the variable is allocated with the same dynamic type and type
    parameters as the component of the value of expr. If it is an array, it is
    allocated with the same bounds. The value of the component of the value of
    expr is then assigned to the corresponding component of the variable using
    defined assignment if the declared type of the component has a type-bound
    defined assignment consistent with the component, and intrinsic assignment
    for the dynamic type of that component otherwise."