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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/57141] Cannot change attributes of USE-associated intrinsic
Date: Fri, 03 May 2013 08:59:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57141

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

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

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2013-05-03 08:59:48 UTC ---
decl.c's gfc_match_null has:

  gfc_intrinsic_symbol (sym);

  if (sym->attr.proc != PROC_INTRINSIC
      && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL)
          || !gfc_add_function (&sym->attr, sym->name, NULL)))
    return MATCH_ERROR;

Failing is the call to gfc_add_procedure.

Here,
  attr.proc = PROC_UNKNOWN
  attr.intrinsic = 1
  attr.use_assoc = 1
  attr.if_source = IFSRC_DECL


Possible patch?

--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -1705,2 +1705,3 @@ gfc_match_null (gfc_expr **result)
   if (sym->attr.proc != PROC_INTRINSIC
+      && !(sym->attr.use_assoc && sym->attr.intrinsic)
       && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL)