From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18531 invoked by alias); 12 Apr 2002 03:26:00 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 18511 invoked by uid 71); 12 Apr 2002 03:26:00 -0000 Resent-Date: 12 Apr 2002 03:26:00 -0000 Resent-Message-ID: <20020412032600.18510.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-To: nobody@gcc.gnu.org Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, kenta@mit.edu Received:(qmail 18386 invoked by uid 61); 12 Apr 2002 03:24:59 -0000 Message-Id:<20020412032459.18385.qmail@sources.redhat.com> Date: Thu, 11 Apr 2002 20:26:00 -0000 From: kenta@mit.edu Reply-To: kenta@mit.edu To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version:gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: libstdc++/6268: _M_extract_buffer_length = 32 for double do_get X-SW-Source: 2002-04/txt/msg00642.txt.bz2 List-Id: >Number: 6268 >Category: libstdc++ >Synopsis: _M_extract_buffer_length = 32 for double do_get >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Thu Apr 11 20:26:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: kenta@mit.edu >Release: 3.0.4 >Organization: >Environment: i386 Linux (and others probably) >Description: In the "double" overloaded version of do_get() (buried inside i686-pc-linux-gnu/libstdc++-v3/include/bits/locale_facets.tcc), the comment makes reference to "the size of 256" (line 595 for 3.0.3), but the array __xtrc is declared to be of length 32 (i.e., _M_extract_buffer_length). This is probably a bug. As far as I can tell, this is what causes failure for this simple code "double x; cin >> x" and I input 0.12345678901234567890123456789012345678901234567890 Anything more than 30 digits past the decimal point breaks. I want it to gracefully round or truncate. >How-To-Repeat: >Fix: Don't ever input more than 30 digits past the decimal point. >Release-Note: >Audit-Trail: >Unformatted: