[Bug fortran/104036] New: Derived type assigment to allocatable with dynamic type

[baradi09 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104036

            Bug ID: 104036
           Summary: Derived type assigment to allocatable with dynamic
                    type
           Product: gcc
           Version: 11.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: baradi09 at gmail dot com
  Target Milestone: ---

Created attachment 52196
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52196&action=edit
Demonstration code

Dear developers,

the behaviour of the GNU compiler is probably not standard conforming, when
assigning a derived type without user defined assignment, which contains a
derived type component with user defined assignment, to an allocatable variable
with dynamic type.

Some discussion about the topic can be found here:

https://fortran-lang.discourse.group/t/intrinsic-assigment-of-derived-types-containing-components-with-user-defined-assignment/2595

I have also attached the demonstration program, where I would expect the user
defined assignment be triggered when line 41 is executed, which does not
happen. (On line 39 it does, as expected.)

Best regards,

Bálint