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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/100409] C++ FE elides pure throwing call
Date: Thu, 08 Jul 2021 08:44:51 +0000 [thread overview]
Message-ID: <bug-100409-4-mkURNPnyTj@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-100409-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100409
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Harald van Dijk from comment #4)
> The documentation for the pure attribute refers to "functions that have no
> observable effects on the state of the program other than to return a value"
> which implies not throwing exceptions, the Wsuggest-attribute=pure text says
> that pure functions have to return normally, and the presence of throw
> statements suppresses the compiler's suggestion to mark functions as pure.
> This function throws, so should the fact that it is marked pure not simply
> make the whole thing undefined?
It has been consensus that throwing exceptions and const/pure are different
concepts that co-exist. See for example the recent discussion at
https://gcc.gnu.org/pipermail/gcc-patches/2021-May/569435.html
next prev parent reply other threads:[~2021-07-08 8:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 6:45 [Bug c++/100409] New: " rguenth at gcc dot gnu.org
2021-05-04 6:46 ` [Bug c++/100409] " rguenth at gcc dot gnu.org
2021-05-05 8:02 ` rguenth at gcc dot gnu.org
2021-07-08 7:25 ` rguenth at gcc dot gnu.org
2021-07-08 8:19 ` harald at gigawatt dot nl
2021-07-08 8:38 ` rguenth at gcc dot gnu.org
2021-07-08 8:38 ` rguenth at gcc dot gnu.org
2021-07-08 8:39 ` rguenth at gcc dot gnu.org
2021-07-08 8:44 ` rguenth at gcc dot gnu.org [this message]
2021-07-08 9:17 ` harald at gigawatt dot nl
2021-07-08 9:20 ` rguenth at gcc dot gnu.org
2021-07-08 9:41 ` rguenth at gcc dot gnu.org
2021-07-08 13:15 ` mpolacek at gcc dot gnu.org
2021-07-08 13:53 ` jason at gcc dot gnu.org
2021-07-08 14:09 ` rguenth at gcc dot gnu.org
2021-07-08 15:13 ` jason at gcc dot gnu.org
2021-07-08 22:06 ` mpolacek at gcc dot gnu.org
2022-01-05 14:41 ` rguenth at gcc dot gnu.org
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