From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-196758-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 47870 invoked by alias); 18 Jul 2018 12:40:50 -0000
Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <http://gcc.gnu.org/ml/>
Sender: gcc-owner@gcc.gnu.org
Received: (qmail 47858 invoked by uid 89); 18 Jul 2018 12:40:50 -0000
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=-2.3 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 spammy=H*f:sk:ae16a87, H*i:sk:ae16a87, basis
X-HELO: mail-oi0-f43.google.com
Received: from mail-oi0-f43.google.com (HELO mail-oi0-f43.google.com) (209.85.218.43) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 18 Jul 2018 12:40:49 +0000
Received: by mail-oi0-f43.google.com with SMTP id v8-v6so8470742oie.5        for <gcc@gcc.gnu.org>; Wed, 18 Jul 2018 05:40:48 -0700 (PDT)
MIME-Version: 1.0
Received: by 2002:ac9:531d:0:0:0:0:0 with HTTP; Wed, 18 Jul 2018 05:40:27 -0700 (PDT)
In-Reply-To: <ae16a877-f91f-8551-dc45-3a2573a32a07@suse.cz>
References: <2bc49528-72cc-46fd-2105-63d292074034@suse.cz> <CADzB+2=JSwoi2Wa9exCcO2wg0eSkcMQu-24K6_qshUkOQMqXYg@mail.gmail.com> <ae16a877-f91f-8551-dc45-3a2573a32a07@suse.cz>
From: Jason Merrill <jason@redhat.com>
Date: Wed, 18 Jul 2018 12:40:00 -0000
Message-ID: <CADzB+2mrwYMkAb8wfgK7v3L2aKn9DOxwPYDtsmTCQPUCogeJzw@mail.gmail.com>
Subject: Re: How to easily identify that a FUNCTION_DECL is a lambda
To: =?UTF-8?Q?Martin_Li=C5=A1ka?= <mliska@suse.cz>
Cc: GCC Development <gcc@gcc.gnu.org>, Nathan Sidwell <nathan@acm.org>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-IsSubscribed: yes
X-SW-Source: 2018-07/txt/msg00257.txt.bz2

On Wed, Jul 18, 2018 at 7:03 PM, Martin Li=C5=A1ka <mliska@suse.cz> wrote:
> On 07/18/2018 03:45 AM, Jason Merrill wrote:
>> On Mon, Jul 16, 2018 at 5:23 PM, Martin Li=C5=A1ka <mliska@suse.cz> wrot=
e:
>>> For purpose of --coverage I would like to distinguish lambda functions
>>> among DECL_ARTIFICIAL functions.
>>
>> I'm curious, why?
>
> It's important for GCOV to report coverage for functions that are
> really present in a source file. Lambdas are such functions.
> On the other hand functions like _Z41__static_initialization_and_destruct=
ion_*
> or some implicit constructors (Centering<3>::Centering(Centering<3> const=
&))
> should not be reported. It confuses a user. Note that both have a valid
> location and one can't distinguish them.

Those other functions may have *a* location, but only
DECL_SOURCE_LOCATION; could we distinguish on that basis?

Jason