From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21458 invoked by alias); 25 Apr 2002 20:03:56 -0000 Mailing-List: contact gdb-patches-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sources.redhat.com Received: (qmail 21440 invoked from network); 25 Apr 2002 20:03:54 -0000 Received: from unknown (HELO nevyn.them.org) (128.2.145.6) by sources.redhat.com with SMTP; 25 Apr 2002 20:03:54 -0000 Received: from drow by nevyn.them.org with local (Exim 3.35 #1 (Debian)) id 170pTE-000540-00; Thu, 25 Apr 2002 16:04:00 -0400 Date: Thu, 25 Apr 2002 13:03:00 -0000 From: Daniel Jacobowitz To: Andrew Cagney Cc: thorpej@wasabisystems.com, gdb-patches@sources.redhat.com Subject: Re: [PATCH] Use multi-arch'd START_INFERIOR_TRAPS_EXPECTED on Alpha target Message-ID: <20020425160400.A19216@nevyn.them.org> Mail-Followup-To: Andrew Cagney , thorpej@wasabisystems.com, gdb-patches@sources.redhat.com References: <20020421181544.S1627@dr-evil.shagadelic.org> <3CC74887.2070401@cygnus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3CC74887.2070401@cygnus.com> User-Agent: Mutt/1.3.23i X-SW-Source: 2002-04/txt/msg01037.txt.bz2 On Wed, Apr 24, 2002 at 08:06:31PM -0400, Andrew Cagney wrote: > >The following puts STARTUP_WITH_SHELL > > Hmm, HP merge. An intermediate version looked like: > > /* If STARTUP_WITH_SHELL is set, GDB's "run" > ! * will attempts to start up the debugee under a shell. > ! * This is in order for argument-expansion to occur. E.g., > ! * (gdb) run * > ! * The "*" gets expanded by the shell into a list of files. > ! * While this is a nice feature, it turns out to interact badly > ! * with some of the catch-fork/catch-exec features we have added. > ! * In particular, if the shell does any fork/exec's before > ! * the exec of the target program, that can confuse GDB. > ! * To disable this feature, set STARTUP_WITH_SHELL to 0. > ! * To enable this feature, set STARTUP_WITH_SHELL to 1. > ! * The catch-exec traps expected during start-up will > ! * be 1 if target is not started up with a shell, 2 if it is. > ! * - RT > ! */ > #define STARTUP_WITH_SHELL 1 > - #define START_INFERIOR_TRAPS_EXPECTED (STARTUP_WITH_SHELL + 1) > > Does STARTUP_WITH_SHELL need to be multi-arched? > > I'm wondering if it would be better to make it a variable (``set > startup-with-shell ''). Looking at its uses it appears that > fork-child.c:startup_inferior() would still work (if it did previously). Silly question.... are there any (supported? working?) uses for this besides globbing and backtick interpolation? I think there aren't, and I think it would simplify GDB to just have a function which called glob() and invoked subshells for ``. It's a little tricky, but not very. We'd lose access to things like shell-specific globbing tricks, but I think that's a worthwhile price to pay. -- Daniel Jacobowitz Carnegie Mellon University MontaVista Software Debian GNU/Linux Developer