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From: Alex Vinokur <alexvn AT bigfoot DOT com>
Newsgroups: comp.os.msdos.djgpp,comp.lang.c++
Subject: Error with bind2nd() and ptr_fun()
Date: Thu, 07 Feb 2002 12:10:40 +0200
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===============================================================
Windows98
gpp : GNU C++ version 2.95.3 20010315/djgpp (release) (djgpp)
      compiled by GNU C version 2.95.3 20010315/djgpp (release).
===============================================================


Here is a program and compilation results.

The compiler detects some error
  and informs about "Internal compiler error".

Is there an error in my program?

Or "Internal compiler error" caused that (!?)

  Thanks.



//============= C++ Code : BEGIN =============
#include <iostream>
#include <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include <functional>

// -------------------------------
class AAA
{
  private :
    string name_;
    int  value_;

  public :
    AAA () {}
    AAA (const string& name_i, int value)
 : name_ (name_i), value_ (value)
    {}
    ~AAA () {}

    int  get_value () {return value_;}
    void set_value (int value) {value_ = value;}
};


// ---------------------------
int foo1 (AAA& inst)
{
  inst.set_value (inst.get_value() + 100);
  return inst.get_value();
}

// ---------------------------
int foo2 (AAA& inst, int value)
{
  inst.set_value (inst.get_value() + value);
  return inst.get_value();
}


// ---------------------------
int main()
{
vector<AAA> vect;

  vect.push_back( AAA("xxx", 3) );
  vect.push_back( AAA("yyy", 5) );

  for_each(vect.begin(), vect.end(), foo1);
  for_each(vect.begin(), vect.end(), ptr_fun (foo1));

  for_each(vect.begin(), vect.end(), bind2nd(ptr_fun(foo2), 200)); //
Line#53

  return 0;
}

//============= C++ Code : END ===============


//=========== Compilation : BEGIN ============

%gpp aaa.c

d:/sys/djgpp/lang/cxx/stl_function.h: In instantiation of
`binder2nd<pointer_to_binary_function<AAA &,int,int> >':
d:/sys/djgpp/lang/cxx/stl_function.h:231:   instantiated from
`bind2nd<pointer_to_binary_function<AAA &,int,int>, int>(const
pointer_to_binary_function<AAA &,int,int> &, const int &)'
aaa.c:53:   instantiated from here
d:/sys/djgpp/lang/cxx/stl_function.h:223: forming reference to reference
type `AAA &const'
d:/sys/djgpp/lang/cxx/stl_function.h:223:
`binder2nd<pointer_to_binary_function<AAA &,int,int> >::operator ()(...)'
must be a nonstatic member function
d:/sys/djgpp/lang/cxx/stl_algo.h: In function `class
binder2nd<pointer_to_binary_function<AAA &,int,int> > for_each<AAA *,
binder2nd<pointer_to_binary_function<AAA &,int,int> > >(AAA *, AAA *,
binder2nd<pointer_to_binary_function<AAA &,int,int> >)':
aaa.c:53:   instantiated from here
d:/sys/djgpp/lang/cxx/stl_algo.h:83: warning: cannot pass objects of type
`AAA' through `...'
d:/sys/djgpp/lang/cxx/stl_function.h: At top level:
d:/sys/djgpp/lang/cxx/stl_function.h: In instantiation of
`binder2nd<pointer_to_binary_function<AAA &,int,int> >::operator ()(...)':
d:/sys/djgpp/lang/cxx/stl_algo.h:83:   instantiated from `for_each<AAA *,
binder2nd<pointer_to_binary_function<AAA &,int,int> > >(AAA *, AAA *,
binder2nd<pointer_to_binary_function<AAA &,int,int> >)'
aaa.c:53:   instantiated from here
d:/sys/djgpp/lang/cxx/stl_function.h:223:
`binder2nd<pointer_to_binary_function<AAA &,int,int> >::operator ()(...)'
must be a nonstatic member function
d:/sys/djgpp/lang/cxx/stl_function.h: In function `{error}
binder2nd<pointer_to_binary_function<AAA &,int,int> >::operator ()(...)':
d:/sys/djgpp/lang/cxx/stl_function.h:223: Internal compiler error in
`layout_decl', at stor-layout.c:247
Please submit a full bug report.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

//=========== Compilation : END ==============



  ===========================
  Alex Vinokur
    mailto:alexvn AT bigfoot DOT com
    mailto:alexvnw AT yahoo DOT com
    http://up.to/alexvn
    http://go.to/alexv_math
  ===========================