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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/113338] Valid Code Rejected, bind(C) procedure with
 pointer argument
Date: Thu, 11 Jan 2024 19:56:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113338

--- Comment #1 from anlauf at gcc dot gnu.org ---
NAG also rejects the code.

The code compiles with gfortran if one declares t interoperable:

  type, bind(c) :: t


Note that F2008 still had:

"(5) any dummy argument without the VALUE attribute corresponds to a formal
 parameter of the prototype that is of a pointer type, and the dummy argume=
nt
 is interoperable with an entity of the referenced type (ISO/IEC 9899:1999,
 6.2.5, 7.17, and 7.18.1) of the formal parameter, ..."

I wonder why the interoperability requirement was dropped.=