Thread: code not compiling w/ "deprecated headers"?

  1. #1
    Registered User
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    Dec 2004

    Question code not compiling w/ "deprecated headers"?

    Hello, I downloaded some image processing code that has been used successfully by others. I am working on a Linux network in a Unix command window. When I try to compile it I get a warning that some of the headers are "deprecated" and this is followed by a whole host of errors. Can anyone get me started on figuring out how to fix or get around this problem? Are the fact that the headers are "deprecated" related to the compilation errors?

    I've included the warning and a few of the many error messages.

    steve:mhoffman% g++
    In file included from /usr/local/include/c++/3.3.1/backward/iostream.h:31,
    /usr/local/include/c++/3.3.1/backward/backward_warning.h:32:2: warning: #warning This file includes at
     least one deprecated or antiquated header. Please consider using one of the 32 headers found in secti
    on of the C++ standard. Examples include substituting the <X> header for the <X.h> header for
     C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning us
    e -Wno-deprecated.
    In file included from coder.hh:37,
                     from coeffset.hh:36,
    BitIO.h: In member function `int BitIn::input_bit()':
    BitIO.h:37: error: no matching function for call to `std::basic_istream<char, 
       std::char_traits<char> >::get(unsigned char&)'
    /usr/local/include/c++/3.3.1/bits/istream.tcc:514: error: candidates are: 
       typename _Traits::int_type std::basic_istream<_CharT, _Traits>::get() [with 
       _CharT = char, _Traits = std::char_traits<char>]
    /usr/local/include/c++/3.3.1/bits/istream.tcc:546: error:                 
       std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, 
       _Traits>::get(_CharT&) [with _CharT = char, _Traits = 
    /usr/local/include/c++/3.3.1/bits/istream.tcc:580: error:                 
       std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, 
       _Traits>::get(_CharT*, int, _CharT) [with _CharT = char, _Traits = 
    Thank you,
    Last edited by kilgorehoffman; 12-30-2004 at 09:05 PM. Reason: grammar

  2. #2
    Arggggh DeepFyre's Avatar
    Join Date
    Sep 2004
    switch iostream.h to iostream


    should be

    deprecated headers are headers that were used before and have now been updated, as far as i know
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  3. #3
    Registered User major_small's Avatar
    Join Date
    May 2003
    you'll also need to tell the compiler what namespace you're using. for now you can do that by typing this:
    using namespace std;
    that's not the best way to do it, but it is the easiest. IMO, the best way to do it is like this:

    using std::cout;
    using std::cin;
    using std::endl;
    using std::flush;
    finally, a third way that alot of people think is the best:
    int main()
        std::cout<<"hello world"<<std::endl;
        return 0;
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  4. #4
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    Or since it's someone elses code (and therefore someone elses problem), you could

    a) inform them their code needs updating (send them the error messages).
    b) read the error message and deduce that this command may be worth trying.
    % g++ -Wno-deprecated
    Then see what (if anything) remains to be solved.

  5. #5
    Redundantly Redundant RoD's Avatar
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    Sep 2002
    >deprecated headers are headers that were used before and have now been updated, as far as i know
    Deprecated headers are headers that were part of a previous version of the standard but may be removed in a future revision. They're still supported, but not recommended. Of course, for headers such as iostream.h that never were a part of the C++ standard, they can be removed from an implementation without warning and it serves you right for not writing standard compliant code.

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