From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-11323-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 7747 invoked by alias); 14 Nov 2001 19:06:02 -0000
Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-prs/>
List-Post: <mailto:gcc-prs@gcc.gnu.org>
List-Help: <mailto:gcc-prs-help@gcc.gnu.org>
Sender: gcc-prs-owner@gcc.gnu.org
Received: (qmail 7722 invoked by uid 71); 14 Nov 2001 19:06:01 -0000
Resent-Date: 14 Nov 2001 19:06:01 -0000
Resent-Message-ID: <20011114190601.7721.qmail@sourceware.cygnus.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, garsh@home.com
Received:(qmail 7243 invoked by uid 61); 14 Nov 2001 19:04:49 -0000
Message-Id:<20011114190449.7238.qmail@sourceware.cygnus.com>
Date: Fri, 02 Nov 2001 14:46:00 -0000
From: garsh@home.com
Reply-To: garsh@home.com
To: gcc-gnats@gcc.gnu.org
X-Send-Pr-Version:gnatsweb-2.9.2 (1.1.1.1.2.21)
Subject: libstdc++/4879: std::ofstream failing to detect out of space?
X-SW-Source: 2001-11/txt/msg00075.txt.bz2
List-Id: <gcc-prs.sourceware.org>


>Number:         4879
>Category:       libstdc++
>Synopsis:       std::ofstream failing to detect out of space?
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Nov 14 11:06:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     garsh@home.com
>Release:        unknown-1.0
>Organization:
>Environment:
Seen on x86 linux, redhat 6.2 & 7.1
>Description:
std::ofstream is not detecting an "out of space"
condition.  I would expect badbit to be set on the
stream, but there is no indication of any problems
in the stream.
>How-To-Repeat:
To reproduce, compile & run the following program.
     
The named file (/boot/xxx) must be in a partition with
no free space.  For my tests, I simply filled up the
/boot partition of a linux machine
(cat /dev/zero > /boot/foo) and ran this.
-----------------------------------------
#include <iostream>
#include <fstream>

int main()
{
    const char* data("this is the text for the file\n");

    std::ofstream ofs("/boot/xxx");

    for (unsigned i = 0; i < strlen(data); ++i)
    {
        ofs.put(data[i]);
    }

    ofs.close();

    if (ofs.good())
    {
        std::cout << "stream is good\n";
    }
    if (ofs.bad())
    {
        std::cout << "stream is bad\n";
    }
    if (ofs.fail())
    {
        std::cout << "stream is fail\n";
    }
    return 0;
}
----------------
     
Running this, you will see that /boot/xxx gets created as
a zero-length file, but the program prints out
"stream is good".
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: