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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/46991] [OOP] polymorphic assumed-size actual arguments
Date: Sun, 23 Dec 2012 22:33:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46991

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |burnus at gcc dot gnu.org

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-12-23 22:33:24 UTC ---
(In reply to comment #1)
> Error: pr46991.f90, line 16: CLASS array A must be a pointer, allocatable or
> assumed-shape

I think that's a bug in NAG - at least, I cannot find anything in the standard
which prohibits explicit-size or assumed-size polymorphic arrays.


> The code modified this way still does not compile with current trunk:
>          A = [ (REC2(I, I+1), I = 1, 10) ]
>          1
> Error: Variable must not be polymorphic in intrinsic assignment at (1) - check
> that there is a matching specific subroutine for '=' operator

See PR43366. That's a Fortran 2008 feature. Assignment to a polymorphic LHS
variable is allowed, if and only if it is allocatable; it makes use of the
realloc-on-assignment feature.