Re: c++/5314: compilation error

Re: c++/5314: compilation error

[jason]

Synopsis: compilation error

State-Changed-From-To: analyzed->closed
State-Changed-By: jason
State-Changed-When: Tue Jan 22 09:37:10 2002
State-Changed-Why:
    not a bug

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5314

Re: c++/5314: compilation error

[rodrigc]

Synopsis: compilation error

State-Changed-From-To: open->analyzed
State-Changed-By: rodrigc
State-Changed-When: Sat Jan 12 11:59:22 2002
State-Changed-Why:
    Even though this code example works with other
    C++ compilers and older gcc versions, it does
    not work with gcc 3.x, because the
    constructor you are invoking on filebuf is not
    part of the C++ standard.
    
    Look at:
    http://gcc.gnu.org/onlinedocs/libstdc++/17_intro/porting-howto.html
    in the section, "3. stream::attach(int fd) is not in the standard any more"
    
    In order to do what you want, look at the following
    example from Josuttis:
    http://www.josuttis.com/libbook/io/outbuf2.hpp.html
    

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5314

c++/5314: compilation error

[jianhua.zhou]

>Number:         5314
>Category:       c++
>Synopsis:       compilation error
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 08 13:56:02 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Jianhua Zhou
>Release:        g++ 3.0.3
>Organization:
>Environment:
RedHat 7.1
>Description:
The following code has compilation problem in g++ 3.0.3.
It is ok in other C++ compiler and g++ 2.9.1

#include <iostream.h>
#include <fstream.h>
main()
{
        filebuf x(1);
}

The output are:
zhou.cxx: In function `int main()':
zhou.cxx:5: no matching function for call to `std::basic_filebuf<char,
   std::char_traits<char> >::basic_filebuf(int)'
/usr/local/include/g++-v3/bits/std_iosfwd.h:78: candidates are:
   std::basic_filebuf<char, std::char_traits<char> >::basic_filebuf(const
   std::basic_filebuf<char, std::char_traits<char> >&)
/usr/local/include/g++-v3/bits/fstream.tcc:122:
   std::basic_filebuf<_CharT, _Traits>::basic_filebuf(std::__c_file_type*,
   std::_Ios_Openmode, typename _Traits::int_type = static_cast<typename
   _Traits::int_type>(8192)) [with _CharT = char, _Traits =
   std::char_traits<char>]
/usr/local/include/g++-v3/bits/fstream.tcc:114:
   std::basic_filebuf<_CharT, _Traits>::basic_filebuf() [with _CharT = char,
   _Traits = std::char_traits<char>]

>How-To-Repeat:
see Description.
>Fix:

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