public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "marc.glisse at normalesup dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/51365] cannot use final empty class in std::tuple Date: Sun, 11 Dec 2011 12:55:00 -0000 [thread overview] Message-ID: <bug-51365-4-JKT9sPwFiV@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-51365-4@http.gcc.gnu.org/bugzilla/> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51365 Marc Glisse <marc.glisse at normalesup dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marc.glisse at normalesup | |dot org --- Comment #9 from Marc Glisse <marc.glisse at normalesup dot org> 2011-12-11 12:12:29 UTC --- Hello, the recent discussion "Structure alignment changes when a constructor or destructor is added" on gcc-help made me wonder whether it would make sense to not only derive for empty classes, but actually derive by default and use members only when necessary (builtin types, final classes). The advantage would be that derivation allows for a slightly more compact representation in some cases with the g++ ABI. I really haven't thought much about the consequences. Sorry for hijacking this bug with this wild idea, but in case it makes sense it might change slightly the way you want to fix it.
next prev parent reply other threads:[~2011-12-11 12:13 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-11-30 19:22 [Bug libstdc++/51365] New: " redi at gcc dot gnu.org 2011-11-30 19:34 ` [Bug libstdc++/51365] " redi at gcc dot gnu.org 2011-11-30 19:40 ` paolo.carlini at oracle dot com 2011-11-30 21:26 ` redi at gcc dot gnu.org 2011-11-30 21:30 ` redi at gcc dot gnu.org 2011-11-30 21:30 ` redi at gcc dot gnu.org 2011-11-30 23:51 ` redi at gcc dot gnu.org 2011-12-01 1:07 ` redi at gcc dot gnu.org 2011-12-03 12:06 ` redi at gcc dot gnu.org 2011-12-11 12:55 ` marc.glisse at normalesup dot org [this message] 2011-12-11 13:51 ` redi at gcc dot gnu.org 2011-12-11 13:56 ` marc.glisse at normalesup dot org 2011-12-15 10:06 ` redi at gcc dot gnu.org 2011-12-15 10:10 ` redi at gcc dot gnu.org 2011-12-20 9:14 ` redi at gcc dot gnu.org 2012-02-04 13:54 ` redi at gcc dot gnu.org 2013-03-22 14:45 ` jakub at gcc dot gnu.org 2013-04-28 11:40 ` redi at gcc dot gnu.org 2014-04-22 11:36 ` jakub at gcc dot gnu.org 2014-04-22 14:36 ` redi at gcc dot gnu.org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-51365-4-JKT9sPwFiV@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).