public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/71218] Add a warning about "new T[integer-literal]"
Date: Mon, 13 Apr 2020 20:34:12 +0000	[thread overview]
Message-ID: <bug-71218-4-4TujLVicoP@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-71218-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71218

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |msebor at gcc dot gnu.org

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Rather than warning for benign but inefficient code I'd find it more friendly
if GCC optimized it instead (if possible of course).  In this case, it should
be possible to rewrite it as suggested (i.e., turn dynamic allocation into
automatic).  A warning would then be useful if the automatic rewrite wasn't
possible for some reason.

Conversely, it could also turn stack allocation into dynamic for very large
sizes (under some option controlling the cut-off point).  This would be
especially useful for VLAs.

           reply	other threads:[~2020-04-13 20:34 UTC|newest]

Thread overview: expand[flat|nested]  mbox.gz  Atom feed
 [parent not found: <bug-71218-4@http.gcc.gnu.org/bugzilla/>]

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-71218-4-4TujLVicoP@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: link
Be 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).