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 middle-end/61677] False positive with -Wmaybe-uninitialized (test case included)
Date: Thu, 03 Jul 2014 15:26:00 -0000	[thread overview]
Message-ID: <bug-61677-4-v69wr6J9yi@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-61677-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61677

--- Comment #3 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Perhaps related to PR61409 or PR56574.
>From gcc-bugs-return-455584-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 03 15:34:07 2014
Return-Path: <gcc-bugs-return-455584-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Delivered-To: listarch-gcc-bugs@gcc.gnu.org
Received: (qmail 19703 invoked by alias); 3 Jul 2014 15:34:06 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Delivered-To: mailing list gcc-bugs@gcc.gnu.org
Received: (qmail 19624 invoked by uid 48); 3 Jul 2014 15:33:56 -0000
From: "wmichaelv at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/61689] Assignment and Operator not working as intended.
Date: Thu, 03 Jul 2014 15:34:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c
X-Bugzilla-Version: 4.7.1
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: wmichaelv at hotmail dot com
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-61689-4-7eaKGK4QkE@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-61689-4@http.gcc.gnu.org/bugzilla/>
References: <bug-61689-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-07/txt/msg00175.txt.bz2
Content-length: 461

https://gcc.gnu.org/bugzilla/show_bug.cgi?ida689

--- Comment #2 from wmichaelv at hotmail dot com ---
(In reply to Marek Polacek from comment #1)
> The program has undefined behaviour; an assignment is not a sequence point.
> See what -Wsequence-point says.

According to the order operation, grouping should be calculated first before
add, subtract, division, and multiplication, and assignment. And the
associativity of assignment is from right to left.


  parent reply	other threads:[~2014-07-03 15:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-02 22:24 [Bug c/61677] New: " josh at joshtriplett dot org
2014-07-03  6:51 ` [Bug middle-end/61677] " schwab@linux-m68k.org
2014-07-03 15:17 ` manu at gcc dot gnu.org
2014-07-03 15:26 ` manu at gcc dot gnu.org [this message]
2021-03-29 21:23 ` [Bug middle-end/61677] False positive with -Wmaybe-uninitialized (predicate analysis, VRP) cvs-commit at gcc dot gnu.org
2021-03-29 21:29 ` msebor at gcc dot gnu.org
2022-08-29 14:26 ` [Bug tree-optimization/61677] " rguenth 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-61677-4-v69wr6J9yi@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).