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Re: Turning warning "returning reference to temporary" into error?
- From: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- To: Eyal Lebedinsky <eyal at eyal dot emu dot id dot au>
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 12 May 2003 08:58:29 +0200 (CEST)
- Subject: Re: Turning warning "returning reference to temporary" into error?
On Mon, 12 May 2003, Eyal Lebedinsky wrote:
> Richard Guenther wrote:
> > Wouldnt it be a good idea to at least turn the
> > maybe_warn_about_returning_address_of_local warnings into an error with
> > -pedantic? Or always?
>
> Let me show you an example where I use it. A function has a large object
> on the stack which it initialises and returns the address of when called
> for the first time.
>
> On a later call it checks how much of it was overwritten and returns
> this
> number of an estimate of how much stack was used suring the time since
> the first call.
You are relying on undefined behavior here, dont you?
Richard.
--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/