Re: libstdc++/8874: using rdbuf to copy from an empty file sets the fail bit on the target stream

Re: libstdc++/8874: using rdbuf to copy from an empty file sets the fail bit on the target stream

[bkoz]

Synopsis: using rdbuf to copy from an empty file sets the fail bit on the target stream

Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Wed Dec 11 10:11:46 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: open->feedback
State-Changed-By: bkoz
State-Changed-When: Wed Dec 11 10:11:46 2002
State-Changed-Why:
    This is not a bug.
    
    27.6.2.5.3 - basic_ostream::operator<< [lib.ostream.inserters]
    
    Says:
    
    -8- If the function inserts no characters, it calls setstate(failbit)
    
    -benjamin

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8874

Re: libstdc++/8874: using rdbuf to copy from an empty file sets the fail bit on the target stream

[bkoz]

Synopsis: using rdbuf to copy from an empty file sets the fail bit on the target stream

State-Changed-From-To: feedback->closed
State-Changed-By: bkoz
State-Changed-When: Mon Jan  6 12:46:57 2003
State-Changed-Why:
    Not a bug

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8874

libstdc++/8874: using rdbuf to copy from an empty file sets the fail bit on the target stream

[nick.wells]

>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----
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Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="rdbuf.C"

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