From: Daniel Jacobowitz <drow@false.org>
To: Jason Molenda <jason-gcclist@molenda.com>
Cc: Devang Patel <dpatel@apple.com>, GCC Development <gcc@gcc.gnu.org>
Subject: Re: Reducing debug info for C++ ctors/dtors
Date: Tue, 12 Jul 2005 01:18:00 -0000 [thread overview]
Message-ID: <20050712011822.GA22286@nevyn.them.org> (raw)
In-Reply-To: <20050711181158.A10767@molenda.com>
On Mon, Jul 11, 2005 at 06:11:58PM -0700, Jason Molenda wrote:
> Yeah, Devang didn't present what we're doing here on the debug side
> too well. We're giving up a bit of information from within gdb --
> it won't know what constructors and destructors a class has defined
> -- for a large savings in debug info (this can be over 20% of an
> application's debug info when lots of templates are in heavy use).
>
> Because the FUN stabs are still present, gdb knows about the
> constructors; it can step into them, it can set breakpoints on them.
>
> For most developers, this isn't a worthwhile tradeoff, but for a
> certain class of appliations the stabs debug info is enormous and
> this helps to ameloriate that by giving up a small bit of gdb
> functionality. This won't be enabled by default even within Apple,
> but it is a useful option to have available.
Thanks for the explanation. That makes more sense. Personally, if
you're going to do this, I don't see why you're keeping debug info for
methods; either ditch all artificial methods (including defaulted
constructors but not manually specified constructors), or ditch all
methods.
--
Daniel Jacobowitz
CodeSourcery, LLC
next prev parent reply other threads:[~2005-07-12 1:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-12 0:37 Devang Patel
2005-07-12 0:56 ` Daniel Jacobowitz
2005-07-12 1:12 ` Jason Molenda
2005-07-12 1:18 ` Daniel Jacobowitz [this message]
2005-07-12 3:46 ` Jason Molenda
2005-07-13 18:42 ` Devang Patel
2005-07-13 18:45 ` Eric Christopher
2005-07-13 19:36 ` Mike Stump
2005-07-13 19:39 ` Eric Christopher
2005-07-13 21:05 ` Mike Stump
2005-07-13 22:11 ` Eric Christopher
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