From: Matthias Kretz <m.kretz@gsi.de>
To: <gcc-patches@gcc.gnu.org>, Jason Merrill <jason@redhat.com>
Cc: <libstdc++@gcc.gnu.org>
Subject: Re: [PATCH] Add gnu::diagnose_as attribute
Date: Tue, 22 Jun 2021 09:30:45 +0200 [thread overview]
Message-ID: <2031764.yKVeVyVuyW@minbar> (raw)
In-Reply-To: <ff3a34fc-4fcc-bced-c53d-f4980c46f564@redhat.com>
On Wednesday, 16 June 2021 02:48:09 CEST Jason Merrill wrote:
> > IIUC, your main concern is that my proposed diagnose_as *can* be used to
> > make diagnostics worse, by replacing names with strings that are not
> > valid identifiers. Of course, whoever uses the attribute to that effect
> > should have a good reason to do so. Is your other concern that using the
> > attribute in a "good" way is repetitive? Would you be happier if I make
> > the string argument to the attribute optional for type aliases?
>
> Yes, and namespace aliases.
I'll look into making the attribute argument optional for aliases. Would you
accept the patch with this change?
Questions:
1. If a type alias applies the attribute after a type was completed /
implicitly instantiated (and possibly already used in diagnostics) should /
can I still modify the type and add the attribute?
2. About the namespace aliases: IIUC an attribute would currently be rejected
because of the C++ grammar. Do you want to make it valid before WG21
officially decides how to proceed? And if you have a pointer for me where I'd
have to adjust the grammar rules, that'd help. :)
Best,
Matthias
--
──────────────────────────────────────────────────────────────────────────
Dr. Matthias Kretz https://mattkretz.github.io
GSI Helmholtz Centre for Heavy Ion Research https://gsi.de
std::experimental::simd https://github.com/VcDevel/std-simd
──────────────────────────────────────────────────────────────────────────
next prev parent reply other threads:[~2021-06-22 7:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <14205410.xuKvIAzr1H@excalibur>
[not found] ` <20210427094648.GL3008@redhat.com>
2021-05-04 11:13 ` Matthias Kretz
2021-05-04 13:34 ` David Malcolm
2021-05-04 14:23 ` Matthias Kretz
2021-05-04 14:32 ` Matthias Kretz
2021-05-04 19:00 ` David Malcolm
2021-05-04 19:22 ` Matthias Kretz
2021-05-14 16:05 ` Martin Sebor
2021-05-26 21:33 ` Matthias Kretz
2021-05-27 17:39 ` Jason Merrill
2021-05-27 18:54 ` Matthias Kretz
2021-05-27 21:15 ` Jason Merrill
2021-05-27 22:07 ` Matthias Kretz
2021-05-28 3:05 ` Jason Merrill
2021-05-28 7:42 ` Matthias Kretz
2021-06-01 19:12 ` Jason Merrill
2021-06-01 21:01 ` Matthias Kretz
2021-06-11 10:01 ` Matthias Kretz
2021-06-15 15:51 ` Jason Merrill
2021-06-15 20:56 ` Matthias Kretz
2021-06-16 0:48 ` Jason Merrill
2021-06-22 7:30 ` Matthias Kretz [this message]
2021-06-22 19:52 ` Jason Merrill
2021-06-22 20:01 ` Matthias Kretz
2021-06-22 20:12 ` Jason Merrill
2021-07-01 9:28 ` Matthias Kretz
2021-07-01 15:18 ` Jason Merrill
2021-07-05 14:18 ` Matthias Kretz
2021-07-07 22:34 ` Jason Merrill
2021-07-07 8:23 ` Matthias Kretz
2021-07-08 1:19 ` Jason Merrill
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