From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31664 invoked by alias); 25 Oct 2007 16:18:19 -0000 Received: (qmail 31651 invoked by uid 22791); 25 Oct 2007 16:18:19 -0000 X-Spam-Check-By: sourceware.org Received: from mail.codesourcery.com (HELO mail.codesourcery.com) (65.74.133.4) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 25 Oct 2007 16:18:16 +0000 Received: (qmail 7358 invoked from network); 25 Oct 2007 16:18:15 -0000 Received: from unknown (HELO localhost) (jimb@127.0.0.2) by mail.codesourcery.com with ESMTPA; 25 Oct 2007 16:18:15 -0000 To: Carlos Eduardo Seo Cc: Joel Brobecker , gdb-patches@sourceware.org Subject: Re: Problems while debugging fortran References: <46FAD136.5030406@linux.vnet.ibm.com> <20070926214619.GC9403@adacore.com> <471F70C0.3000206@linux.vnet.ibm.com> <20071024193336.GI11797@adacore.com> <20071024195719.GA16009@caradoc.them.org> <471FA810.6080506@linux.vnet.ibm.com> <471FBF9E.5000607@linux.vnet.ibm.com> <20071024220648.GL11797@adacore.com> <472098B2.5010605@linux.vnet.ibm.com> <20071025154107.GA13835@caradoc.them.org> From: Jim Blandy Date: Thu, 25 Oct 2007 17:05:00 -0000 In-Reply-To: <20071025154107.GA13835@caradoc.them.org> (Daniel Jacobowitz's message of "Thu, 25 Oct 2007 11:41:07 -0400") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2007-10/txt/msg00660.txt.bz2 Daniel Jacobowitz writes: > On Thu, Oct 25, 2007 at 08:30:38AM -0700, Jim Blandy wrote: >> This comment isn't right. The Fortran main program expects to have >> its arguments passed to it differently than other subroutines or >> functions; that's what DW_AT_calling_convention is meant to express. >> The comment should say something like: >> >> /* DWARF doesn't provide a way to identify a program's entry point. >> However, the Fortran main program receives its arguments via a >> special calling convention; we look for that to recognize the >> program's entry point. */ > > Have we concluded that this is true? If so, is there any reason we > should not make gfortran generate this attribute? And if so, why > not GNAT or GCJ too? We've been discussing this on the DWARF committee. That attribute is definitely not meant to be used to recognize the Fortran main program. There's a proposal for an attribute that really does what we want, but it's been sent back for revision.