From: Jeff Law <law@redhat.com>
To: Marc Glisse <marc.glisse@inria.fr>, gcc-patches@gcc.gnu.org
Subject: Re: Warn when returning the address of a temporary (middle-end) v2
Date: Mon, 30 Jun 2014 21:04:00 -0000 [thread overview]
Message-ID: <53B1D0C5.30901@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1406291111050.2096@laptop-mg.saclay.inria.fr>
On 06/29/14 03:22, Marc Glisse wrote:
>
> After looking at PR 61597, I updated the 2 conditions to:
>
> + if ((TREE_CODE (valbase) == VAR_DECL
> + && !is_global_var (valbase))
> + || TREE_CODE (valbase) == PARM_DECL)
>
> a PARM_DECL is a local variable and returning its address is wrong,
> isn't it?
Right. It can live in either a caller or callee allocated slot.
When I first glanced at the patch my thought was "why is this in the
path isolation pass?" But I see you want to modify the returned value
to be NULL. I'll have to look at why you want to do that, but at least
I understand why it's utilizing the path isolation code.
jeff
next prev parent reply other threads:[~2014-06-30 21:04 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-22 18:20 Marc Glisse
2014-06-29 9:22 ` Marc Glisse
2014-06-30 21:04 ` Jeff Law [this message]
2014-06-30 21:37 ` Marc Glisse
2014-07-02 12:19 ` Alan Modra
2014-07-02 12:41 ` Marc Glisse
2014-07-02 22:39 ` Jeff Law
2014-07-02 22:46 ` Jeff Law
2014-07-18 5:06 ` Jeff Law
2014-07-22 9:04 ` Marc Glisse
2014-07-31 4:54 ` Jeff Law
2014-07-27 18:20 ` Richard Sandiford
2014-07-27 19:09 ` Marc Glisse
2014-07-27 20:45 ` Andreas Schwab
2014-07-27 21:05 ` Marc Glisse
2014-07-29 19:00 ` Marc Glisse
2014-07-29 19:13 ` David Malcolm
2014-07-29 19:22 ` Marek Polacek
2014-07-29 19:47 ` David Malcolm
2014-07-29 19:28 ` Marc Glisse
2014-07-30 12:00 ` Marc Glisse
2014-07-31 4:58 ` Jeff Law
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