From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21520 invoked by alias); 24 Apr 2003 10:06:02 -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 21498 invoked by uid 71); 24 Apr 2003 10:06:01 -0000 Resent-Date: 24 Apr 2003 10:06:01 -0000 Resent-Message-ID: <20030424100601.21497.qmail@sources.redhat.com> Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer) Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org Resent-Reply-To: gcc-gnats@gcc.gnu.org, Hans.Ranke@ei.tum.de Received: (qmail 19876 invoked by uid 48); 24 Apr 2003 09:59:01 -0000 Message-Id: <20030424095901.19875.qmail@sources.redhat.com> Date: Thu, 24 Apr 2003 10:06:00 -0000 From: Hans.Ranke@ei.tum.de Reply-To: Hans.Ranke@ei.tum.de To: gcc-gnats@gcc.gnu.org X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31) Subject: libstdc++/10478: stdio_filebuf corrupts output for buffer sizes 1,2,3The X-SW-Source: 2003-04/txt/msg01025.txt.bz2 List-Id: >Number: 10478 >Category: libstdc++ >Synopsis: stdio_filebuf corrupts output for buffer sizes 1,2,3The >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Thu Apr 24 10:06:01 UTC 2003 >Closed-Date: >Last-Modified: >Originator: Hans Ranke >Release: 3.2.2 >Organization: >Environment: Red Hat Linux 8.0 >Description: The __gnu_cxx::stdio_filebuf has an optional argument for the desired buffer size. However, if __size is set to 1, 2, or 3, only every (__size+1)th character will be written out. >How-To-Repeat: See attached file. The program is supposed to output a constant string, followed by the buffer size, for the buffer sizes 0 .. 5 to the file "testout". I get the following output: abcdefghijklmnopqrstuvwxyz 0 bdfhjlnprtvxz 1 cfilorux 2 dhlptx 3 abcdefghijklmnopqrstuvwxyz 4 abcdefghijklmnopqrstuvwxyz 5 For the sizes 0, 4 and 5, the output is as expected, for 1, 2 and 3, only every 2nd, 3rd or 4th character is written. >Fix: >Release-Note: >Audit-Trail: >Unformatted: ----gnatsweb-attachment---- Content-Type: application/octet-stream; name="test1.cc" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="test1.cc" dXNpbmcgbmFtZXNwYWNlIHN0ZDsKI2luY2x1ZGUgPGZjbnRsLmg+CiNpbmNsdWRlIDxleHQvc3Rk aW9fZmlsZWJ1Zi5oPgojaW5jbHVkZSA8aW9zdHJlYW0+CgoKaW50IG1haW4oaW50IGFyZ2MsIGNo YXIgKiphcmd2KSB7CiAgICBpbnQgZmQgPSBvcGVuKCJ0ZXN0b3V0IiwgT19XUk9OTFkgfCBPX0NS RUFUKTsKICAgIEZJTEUgKmNmaWxlID0gZmRvcGVuKGZkLCAidyIpOwogICAgc2V0YnVmKGNmaWxl LCAoY2hhciAqKTApOyAvLyBzZXQgdG8gdW5idWZmZXJlZAoKICAgIGZvciAoaW50IGJ1ZnNpemUg PSAwOyBidWZzaXplIDwgNjsgYnVmc2l6ZSsrKSB7CglfX2dudV9jeHg6OnN0ZGlvX2ZpbGVidWY8 Y2hhcj4qIGZpbGVfYnVmID0gCgluZXcgX19nbnVfY3h4OjpzdGRpb19maWxlYnVmPGNoYXI+KCBj ZmlsZSwgaW9zX2Jhc2U6OmluIHwgaW9zX2Jhc2U6Om91dCwgYnVmc2l6ZSk7CiAgICAgICAgaW9z dHJlYW0gKnN0cj0gbmV3IGlvc3RyZWFtKGZpbGVfYnVmKTsKCSpzdHIgPDwgImFiY2RlZmdoaWpr bG1ub3BxcnN0dXZ3eHl6IjsKCWRlbGV0ZShzdHIpOwoJZGVsZXRlKGZpbGVfYnVmKTsKCWZwcmlu dGYoY2ZpbGUsICIgJWRcbiIsIGJ1ZnNpemUpOwogICAgfQp9Cg==