Re: libstdc++/8504: ios::app + pipes

Re: libstdc++/8504: ios::app + pipes

[paolo]

Synopsis: ios::app + pipes

State-Changed-From-To: open->feedback
State-Changed-By: paolo
State-Changed-When: Sat Nov 16 04:07:59 2002
State-Changed-Why:
    I cannot reproduce the error on i686-pc-linux-gnu (glibc2.3.1)
    with 3.2.1 pre and 3.3 exp: seems either platform dependent
    or already fixed. Could you possibly test on Solaris and/or
    IRIX 3.2.1 pre?

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8504

Re: libstdc++/8504: ios::app + pipes

[Dimitri Papadopoulos-Orfanos]

The following reply was made to PR libstdc++/8504; it has been noted by GNATS.

From: Dimitri Papadopoulos-Orfanos <papadopo@shfj.cea.fr>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org,
   gcc-prs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/8504: ios::app + pipes
Date: Tue, 22 Apr 2003 14:35:02 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8504
 
  > It seems that not much can be done on the v3 side...
 
 What do you mean by that. Can something be done for v4? Or is this not 
 annoying enough to be ever fixed?
 
 --
 Dimitri
 

Re: libstdc++/8504: ios::app + pipes

[paolo]

Synopsis: ios::app + pipes

State-Changed-From-To: analyzed->closed
State-Changed-By: paolo
State-Changed-When: Mon Feb  3 13:05:46 2003
State-Changed-Why:
    It seems that not much can be done on the v3 side...

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8504

Re: libstdc++/8504: ios::app + pipes

[paolo]

Synopsis: ios::app + pipes

State-Changed-From-To: feedback->analyzed
State-Changed-By: paolo
State-Changed-When: Mon Nov 18 00:52:05 2002
State-Changed-Why:
    Submitter cannot reproduce on i686-pc-linux-gnu either, but
    the problem it's still present on Solaris and IRIX.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8504

libstdc++/8504: ios::app + pipes

[papadopo]

>Number:         8504
>Category:       libstdc++
>Synopsis:       ios::app + pipes
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 08 06:26:10 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     papadopo@shfj.cea.REMOVE.fr
>Release:        gcc-3.2
>Organization:
>Environment:
Solaris 8 7/01 + gcc-3.2
IRIX 6.5.13 + gcc-3.0.2
>Description:
fstream::open() with ios::app flag fails on pipes for gcc 3.0 and better.

This used to work fine with gcc 2.95.3.
>How-To-Repeat:
To reproduce:
- build the attached openapp.cc source file
- create a pipe named /tmp/pipe - use "mkfifo /tmp/pipe"
- run the program, it will attempt to open /tmp/pipe with
  fstream::open() and ios::app flag
- read the pipe from a shell to unblock - "cat /tmp/pipe"
- fstream::open() will fail with error "Illegal seek"
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
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Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="openapp.cc"

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