Re: libstdc++/9555: ostream inserters fail to set badbit on exception

Re: libstdc++/9555: ostream inserters fail to set badbit on exception

[paolo]

Synopsis: ostream inserters fail to set badbit on exception

State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Wed Feb 12 21:32:58 2003
State-Changed-Why:
    Confirmed. This seems actually about the underlying 
    implementation of xsputn in v3, which, not being
    equivalent to repeated calls to sputc, doesn't call
    overflow at all for this testcase! 

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9555

Re: libstdc++/9555: ostream inserters fail to set badbit on exception

[bkoz]

Synopsis: ostream inserters fail to set badbit on exception

Responsible-Changed-From-To: unassigned->bkoz
Responsible-Changed-By: bkoz
Responsible-Changed-When: Fri Apr 18 03:51:38 2003
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: analyzed->closed
State-Changed-By: bkoz
State-Changed-When: Fri Apr 18 03:51:38 2003
State-Changed-Why:
    Fixed.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9555

Re: libstdc++/9555: ostream inserters fail to set badbit on exception

[Paolo Carlini]

The following reply was made to PR libstdc++/9555; it has been noted by GNATS.

From: Paolo Carlini <pcarlini@unitus.it>
To: gcc-gnats@gcc.gnu.org,  sebor@roguewave.com,  gcc-bugs@gcc.gnu.org, 
 nobody@gcc.gnu.org,  gcc-prs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/9555: ostream inserters fail to set badbit on exception
Date: Sat, 22 Feb 2003 22:48:18 +0100

 Correction, sorry.
 Not relying too much on gdb, now I see that overflow _is_ in fact called.
 
 Paolo.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9555
 

libstdc++/9555: ostream inserters fail to set badbit on exception

[sebor]

>Number:         9555
>Category:       libstdc++
>Synopsis:       ostream inserters fail to set badbit on exception
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 03 20:26:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     sebor@roguewave.com
>Release:        3.2.1
>Organization:
>Environment:

>Description:
The expected exit status of the program below is 0. When compiled with gcc 3.2.1 and the supplied libstdc++, it is 1, indicating that the inserter fails to set badbit when an exception occurs during output.

Regards
Martin
>How-To-Repeat:
#include <ostream>
#include <streambuf>

struct buf: std::streambuf
{
    virtual int_type overflow (int_type) {
        throw 0;
        return -1;
    }
};

int main ()
{
    buf b;

    std::ostream strm (&b);

    strm.exceptions (std::ios::badbit);

    try {
        strm << 0;
    }
    catch (int) {
        return !(strm.bad ());
    }
    catch (...) {
        return 2;
    }

    return 3;
}
>Fix:

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