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From "Travis Vitek (JIRA)" <j...@apache.org>
Subject [jira] Updated: (STDCXX-204) std::filebuf::overflow(EOF) writes garbage in unbuffered mode
Date Mon, 03 Dec 2007 23:59:43 GMT

     [ https://issues.apache.org/jira/browse/STDCXX-204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Travis Vitek updated STDCXX-204:
--------------------------------

    Attachment:     (was: stdcxx-240.patch)

> std::filebuf::overflow(EOF) writes garbage in unbuffered mode
> -------------------------------------------------------------
>
>                 Key: STDCXX-204
>                 URL: https://issues.apache.org/jira/browse/STDCXX-204
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: 27. Input/Output
>    Affects Versions: 4.1.2, 4.1.3
>         Environment: All.
>            Reporter: Martin Sebor
>            Assignee: Martin Sebor
>             Fix For: 4.2.0
>
>
> The program below dumps core:
> $ cat t.cpp && nice gmake t && ./t
> #include <cassert>
> #include <fstream>
> struct MyBuf: std::filebuf {
>     int_type oflow () {
>          return overflow (traits_type::eof ());
>     }
> };
> int main ()
> {
>     MyBuf f;
>     assert (0 != f.open ("test.file", std::ios::out | std::ios::trunc));
>     assert (0 != f.pubsetbuf (0, 0));
>     assert (MyBuf::traits_type::eof () != f.oflow ());
>     assert (0 == f.pubseekoff (0, std::ios::end, std::ios::out));
> }
> aCC -c -I/amd/devco/sebor/dev/stdlib/include/ansi -I/usr/include  -D_RWSTDDEBUG   -mt
-D_RWSTD_USE_CONFIG -I/amd/devco/sebor/dev/stdlib/include -I/build/sebor/aCC-3.63-15S/include
-I/amd/devco/sebor/dev/stdlib/../rwtest -I/amd/devco/sebor/dev/stdlib/../rwtest/include -I/amd/devco/sebor/dev/stdlib/tests/include
 -Aa +nostl  -g +d  +DD64 +w +W392 +W655 +W684 +W818 +W819 +W849  t.cpp
> aCC t.o -o t -L/build/sebor/aCC-3.63-15S/rwtest -lrwtest15S -Aa +nostl -Wl,+s -Wl,+vnocompatwarnings
-L/build/sebor/aCC-3.63-15S/lib   -mt +DD64 -L/build/sebor/aCC-3.63-15S/lib -lstd15S   -lm
> Assertion failed: 0 == f.pubseekoff (0, std::ios::end, std::ios::out), file t.cpp, line
19
> ABORT instruction (core dumped)

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