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Re: [Patch, fortran] PR33542 - gfortran does not detect ambigious specific names if they are the same as generic names

From: Jerry DeLisle <jvdelisle at verizon dot net>
To: Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>
Cc: "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, gcc-patches List <gcc-patches at gcc dot gnu dot org>
Date: Sun, 07 Oct 2007 12:38:37 -0700
Subject: Re: [Patch, fortran] PR33542 - gfortran does not detect ambigious specific names if they are the same as generic names
References: <339c37f20710071201p594ed61ex33a4337e2d164ee6@mail.gmail.com>

Paul Richard Thomas wrote:

:ADDPATCH fortran:

This is the obvious version of the 'obvious' patch that wasn't.  Sorry
about the last mess.

The general rule is that use associated symbols can be ambiguous just
as long as they are not referenced.  This is done so that other
symbols may be used from these modules that are not ambiguous, without
necessitating only clauses.

In the case of this PR, the symtree for 'foo' is ambiguous, where
there are two identically named specific procedures.  Thus, the trick
is to make sure this is detected when resolving the actual argument.
The testcase is the original..

This time, I have tested tonto-2.3 with the patch, as well as
bootstrapping and regtesting.

OK for trunk?

Paul

2007-10-07 Paul Thomas <pault@gcc.gnu.org>

	PR fortran/33542
	* resolve.c (resolve_actual_arglist): If the actual argument is
	ambiguous, then there is an error.

2007-10-07 Paul Thomas <pault@gcc.gnu.org>

	PR fortran/33542
	* gfortran.dg/ambiguous_specific_1.f90: New test.

OK

References:
- [Patch, fortran] PR33542 - gfortran does not detect ambigious specific names if they are the same as generic names
  - From: Paul Richard Thomas

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