public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/47734] no "comparisons like X<=Y<=Z do not have their mathematical meaning" warning in c++
Date: Mon, 14 Feb 2011 16:20:00 -0000	[thread overview]
Message-ID: <bug-47734-4-Ysx9qheAZP@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-47734-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47734

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.02.14 16:16:37
                 CC|                            |manu at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2011-02-14 16:16:37 UTC ---
In gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3

I get the warning for:


int test(void) {
  if(-2 < -1 < 0) { return 0;}
  return 1;
}

g++ -Wall -Wextra test.cc -c
test.cc: In function ‘int test()’:
test.cc:2: warning: comparisons like ‘X<=Y<=Z’ do not have their mathematical
meaning

4.1.2 is too old.


  reply	other threads:[~2011-02-14 16:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-14 16:16 [Bug c++/47734] New: " sds at gnu dot org
2011-02-14 16:20 ` manu at gcc dot gnu.org [this message]
2011-03-29 16:45 ` [Bug c++/47734] " 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-47734-4-Ysx9qheAZP@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).