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From "Mark Brown (JIRA)" <j...@apache.org>
Subject [jira] Commented: (STDCXX-333) std::wfilebuf extracts more than 1 character from a 1 byte file
Date Mon, 19 Feb 2007 20:18:05 GMT

    [ https://issues.apache.org/jira/browse/STDCXX-333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474266
] 

Mark Brown commented on STDCXX-333:
-----------------------------------

I tried to see if I could reproduce this problem on Cygwin. My version of Cygwin doesn't have
any locales so I tried to generate the en_US.UTF-8 locale using the stdcxx localedef program.
I got this error:

nls$ ../bin/localedef -c -f /home/mbrown/stdcxx/etc/nls/charmaps/UTF-8 -i /home/mbrown/stdcxx/etc/nls/src/en_US
en_US.UTF-8
call to system LC_ALL=C /usr/bin/locale -a >/tmp/tdf4.0 2>/dev/null: No such file or
directory
Hangup


> std::wfilebuf extracts more than 1 character from a 1 byte file
> ---------------------------------------------------------------
>
>                 Key: STDCXX-333
>                 URL: https://issues.apache.org/jira/browse/STDCXX-333
>             Project: C++ Standard Library
>          Issue Type: Bug
>          Components: 27. Input/Output
>    Affects Versions: 4.1.3
>         Environment: gcc 3.2.3 on Linux
>            Reporter: Mark Brown
>
> I get an an abort when I run the following program on Linux.
> #include <cassert>
> #include <fstream>
> #include <iostream>
> int main ()
> {
>     {
>         std::filebuf fb;
>         fb.open ("file", std::ios::out);
>         fb.sputc ('a');
>     }
>     std::wfilebuf fb;
>     fb.pubimbue (std::locale ("en_US.UTF-8"));
>     fb.open ("file", std::ios::in);
>     const int c[] = { fb.sbumpc (), fb.sgetc () };
>     std::cout << c [0] << ' ' << c [1] << std::endl;
>     assert (L'a' == c [0]);
>     assert (std::wfilebuf::traits_type::eof () == c [1]);
> }
> test: test.cpp:21: int main(): Assertion `std::wfilebuf::traits_type::eof () == c [1]'
failed.
> Aborted

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