From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2578 invoked by alias); 2 Jul 2014 09:43:26 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 1625 invoked by uid 48); 2 Jul 2014 09:43:16 -0000 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/61667] setting max_load_factor of unordered_map cause buckets shrink Date: Wed, 02 Jul 2014 09:43:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 4.8.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: redi at gcc dot gnu.org X-Bugzilla-Status: NEW 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: bug_status cf_reconfirmed_on cc version everconfirmed Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-07/txt/msg00073.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D61667 Jonathan Wakely changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2014-07-02 CC| |fdumont at gcc dot gnu.org Version|unknown |4.8.2 Ever confirmed|0 |1 --- Comment #1 from Jonathan Wakely --- Fran=C3=A7ois, why does __rehash_policy check for inequality? if (__n_bkt !=3D _M_bucket_count) _M_rehash(__n_bkt, _M_rehash_policy._M_state()); Is there any reason not to change that to: if (__n_bkt > _M_bucket_count) _M_rehash(__n_bkt, _M_rehash_policy._M_state()); >>From gcc-bugs-return-455483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jul 02 09:45:08 2014 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 7857 invoked by alias); 2 Jul 2014 09:45:07 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 7699 invoked by uid 48); 2 Jul 2014 09:44:58 -0000 From: "redi at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/61668] Division returns an error in some cases Date: Wed, 02 Jul 2014 09:45:00 -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: 4.8.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: redi at gcc dot gnu.org 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: bug_status resolution Message-ID: In-Reply-To: References: 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/msg00074.txt.bz2 Content-length: 512 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61668 Jonathan Wakely changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #2 from Jonathan Wakely --- Floating point numbers are not exact. 0.59 cannot be exactly represented in a 64-bit double.