public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: nick.wells@jobstats.co.uk
To: gcc-gnats@gcc.gnu.org
Subject: libstdc++/8874: using rdbuf to copy from an empty file sets the fail bit on the target stream
Date: Sun, 08 Dec 2002 07:56:00 -0000	[thread overview]
Message-ID: <20021208154706.28790.qmail@sources.redhat.com> (raw)


>Number:         8874
>Category:       libstdc++
>Synopsis:       using rdbuf to copy from an empty file sets the fail bit on the target stream
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 08 07:56:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Nick Wells
>Release:        gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
>Organization:
>Environment:
Linux RedHat 8.0 i686 (Dell Precision 220)
>Description:
when you copy from an empty file using the os << fs.rdbuf() idiom the failbit is set on the output stream. See sample code.
>How-To-Repeat:
compile and run the program (I have used /etc/passwd as a 'good' file and /dev/null as a 'bad' file but any file would do.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="rdbuf.C"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="rdbuf.C"
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             reply	other threads:[~2002-12-08 15:56 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-08  7:56 nick.wells [this message]
2002-12-11 10:11 bkoz
2003-01-06 20:46 bkoz

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=20021208154706.28790.qmail@sources.redhat.com \
    --to=nick.wells@jobstats.co.uk \
    --cc=gcc-gnats@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).