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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/104332] [9/10/11/12 Regression] ICE in resolve_symbol,
 at fortran/resolve.cc:15815
Date: Tue, 01 Feb 2022 19:14:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104332

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kargl at gcc dot gnu.org

--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to G. Steinmetz from comment #1)
> Note that this addition gives an ICE down to at least r5 for some reasons=
 :
>=20
> $ cat z3.f90
> block data
>    real, bind(c) :: a
> end block data

This is fixed by

diff --git a/gcc/fortran/symbol.cc b/gcc/fortran/symbol.cc
index 7a80dfd063b..8f9a2bb4d95 100644
--- a/gcc/fortran/symbol.cc
+++ b/gcc/fortran/symbol.cc
@@ -481,6 +481,9 @@ gfc_check_conflict (symbol_attribute *attr, const char
*name, locus *where)
        a1 =3D publik;
       if (attr->intent !=3D INTENT_UNKNOWN)
        a1 =3D intent;
+      /* F2018:C1416. */
+      if (attr->is_bind_c !=3D INTENT_UNKNOWN)
+       a1 =3D is_bind_c;

       if (a1 !=3D NULL)
        {

But, I think that there are conflicts in the Fortran standard.
Are these code snippets equivalent?

BLOCK DATA
   BIND(C) :: A
END BLOCK DATA

BLOCK DATA
   REAL :: A
   BIND(C) :: A
END BLOCK DATA

BLOCK DATA
   REAL, BIND(C) :: A
END BLOCK DATA

If yes, do C1415 and C1416 conflict?

C1415 (R1420) A block-data specification-part shall contain
      only derived-type definitions and ..., BIND, ..., and
      type declaration statements.

C1416 (R1420) A type declaration statement in a block-data
      specification-part shall not contain ALLOCATABLE, EXTERNAL,
      or BIND attribute specifiers.

In fact, does C1415 conflict with C819?

C819 A variable with the BIND attribute shall be declared in
     the specification part of a module.=