From: Paolo Carlini <paolo.carlini@oracle.com>
To: Richard Guenther <richard.guenther@gmail.com>
Cc: Steven Bosscher <stevenb.gcc@gmail.com>,
GCC Mailing List <gcc@gcc.gnu.org>,
GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [patch][RFC] bail out after front-end errors
Date: Tue, 27 Mar 2012 09:50:00 -0000 [thread overview]
Message-ID: <4F718C81.70501@oracle.com> (raw)
In-Reply-To: <CAFiYyc32n26u-QL8Y+oQ+eEHu4+o4V2z0wb2MHV4MbVPm-NPDQ@mail.gmail.com>
Hi,
> On Mon, Mar 26, 2012 at 10:56 PM, Steven Bosscher<stevenb.gcc@gmail.com> wrote:
>> Hello,
>>
>> This patch is one way to address PR44982. I see no good reason to
>> cgraph_finalize_compilation_unit if there were parse errors. As Richi
>> already pointed out, GCC traditionally has proceeded after parse
>> errors to preserve warnings and errors we generate from the middle-end
>> and during semantic analysis. But it seems to me that those warnings
>> are not very meaningful after parse errors (-Wuninitialized after a
>> parse error??), and errors from the middle end are mostly for exotic
>> code (involving asm()s and the like). Bailing out after parse errors
>> is therefore IMHO the right thing to do for the common case.
>>
>> Thoughts? Comments?
> Conceptually it makes sense. Did you check whether allowing the
> FE too proceed to final_write_globals but stop before
> cgraph_finalize_compilation_unit
> preserves any errors? I would expect that maybe FE global variable
> diagostics are defered until that? It would be nice to finally move
> the call to cgraph_finalize_compilation_unit to the middle-end ...
> (warning, if you try that you run into an issue with the Java frontend ... :/)
I bet it does preserve some errors. I noticed that when I analyzed a bit
PR40405, see Comment #3 in particular.
Thanks,
Paolo.
next prev parent reply other threads:[~2012-03-27 9:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-26 20:56 Steven Bosscher
2012-03-27 7:17 ` Richard Guenther
2012-03-27 9:50 ` Paolo Carlini [this message]
[not found] ` <CABu31nOcM81G89w4G2LKn0KoSNamLpgTO07YjZm=-9a94CQttA@mail.gmail.com>
[not found] ` <CAFiYyc0S4358PFGyzJjqe_Uw=H-DmGH4n+C=AvO1Xx-nQOLD9A@mail.gmail.com>
2012-12-28 17:36 ` Steven Bosscher
2013-01-02 15:07 ` Richard Biener
2012-03-27 19:00 ` Mike Stump
2012-03-27 19:13 ` Steven Bosscher
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