GNU bug report logs - #61730
30.0.50; Compiler warnings for delq and delete

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Message #107 received at 61730 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Ruijie Yu <ruijie <at> netyu.xyz>
Cc: Mattias Engdegård <mattias.engdegard <at> gmail.com>,
 61730 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#61730: 30.0.50; Compiler warnings for delq and delete
Date: Sun, 21 May 2023 05:57:47 +0200

Ruijie Yu <ruijie <at> netyu.xyz> writes:

> Maybe we can take inspirations from other langagues?  In rust we have
> the `#[must_use]' attribute [1], and in C++17 and C23 we have the
> `[[nodiscard]]' attribute [2] [3].

These are not bad.  I like "nodiscard".

> Also, is there any definitive relation between this
> 'important-return-value property and the existing "pure" function
> declaration?  Like the `(declare (pure t))' thing in the front of a
> defun.

Interesting question.  Does 'pure' (or 'side-effect-free') imply
'important-return-value'?

Michael.

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