Help with std::bind2nd() and GCC 3.3

[Paul Dubuc <pdubuc at cas dot org>]

Here is a simplified example of some code that compiles and works with g++
2.95.3 but gives the following compiler error with g++ 3.3.  Can anyone tell me
what is wrong with this code and how to get it to work with the new compiler
(other than rewriting the loop without find_if and bind2nd)?  Help would be very
much appreciated.  Thank you.

#include <iostream>
#include <list>
#include <functional>
#include <algorithm>

class FPB {
     private:
         long key;
     public:
         long getkey() const { return key; }
};

struct compareKey :
     std::binary_function<const FPB, const long*, bool>
{
     bool operator()(const FPB& pb, const long* key_ptr) const
     {
         return pb.getkey() == *key_ptr;
     }
};

main()
{
     std::list<FPB> lst;
     long key = 1;

     std::list<FPB>::iterator iter(
         std::find_if(
             lst.begin(),
             lst.end(),
             std::bind2nd(compareKey(), &key)
         )
     );
     if (iter != lst.end()) std::cout << "found" << std::endl;
     else std::cout << "not found" << std::endl;
}

g++ -v b2nd.cc
Reading specs from /vol/gnu/gcc/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.3/spec
s
Configured with: ../gcc-3.3/configure --prefix=/vol/gnu/gcc-3.3 --enable-shared
--enable-threads --enable-cpp --enable-languages=c++ --with-gnu-as --with-as=/vo
l/gnu/gcc-3.3/bin/as --with-gnu-ld --with-ld=/vol/gnu/gcc-3.3/bin/ld --host=spar
c-sun-solaris2.8
Thread model: posix
gcc version 3.3
  /vol/gnu/gcc/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.3/cc1plus -quiet -v -ipr
efix /vol/gnu/gcc/bin/../lib/gcc-lib/sparc-sun-solaris2.8/3.3/ -D__GNUC__=3 -D__
GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -Dsparc -D__sparc__ -D__sparc -D__GCC_NEW
_VARARGS__ -Acpu=sparc -Amachine=sparc b2nd.cc -D__GNUG__=3 -quiet -dumpbase b2n
d.cc -auxbase b2nd -version -o /tmp/ccUGtNRa.s
GNU C++ version 3.3 (sparc-sun-solaris2.8)
         compiled by GNU C version 3.3.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/vol/gnu/gcc/sparc-sun-solaris2.8/include"
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/vol/gnu/gcc-3.3/sparc-sun-solaris2.8/include"
ignoring duplicate directory "/vol/gnu/gcc-3.3/include/c++/3.3"
ignoring duplicate directory "/vol/gnu/gcc-3.3/include/c++/3.3/sparc-sun-solaris
2.8"
ignoring duplicate directory "/vol/gnu/gcc-3.3/include/c++/3.3/backward"
ignoring duplicate directory "/vol/gnu/gcc-3.3/lib/gcc-lib/sparc-sun-solaris2.8/
3.3/include"
#include "..." search starts here:
#include <...> search starts here:
  /vol/gnu/gcc/include/c++/3.3
  /vol/gnu/gcc/include/c++/3.3/sparc-sun-solaris2.8
  /vol/gnu/gcc/include/c++/3.3/backward
  /vol/gnu/gcc/lib/gcc-lib/sparc-sun-solaris2.8/3.3/include
  /vol/gnu/gcc-3.3/include
  /usr/include
End of search list.
/vol/gnu/gcc/include/c++/3.3/bits/stl_function.h: In instantiation of `std::bind
er2nd<compareKey>':
b2nd.cc:34:   instantiated from here
/vol/gnu/gcc/include/c++/3.3/bits/stl_function.h:401: error: `typename
    _Operation::result_type std::binder2nd<_Operation>::operator()(typename
    _Operation::first_argument_type&) const [with _Operation = compareKey]' and
    `typename _Operation::result_type
    std::binder2nd<_Operation>::operator()(typename
    _Operation::first_argument_type&) const [with _Operation = compareKey]'
    cannot be overloaded


--
Paul M. Dubuc                       mailto:pdubuc@cas.org
Room 4349B                          (614) 447-3600 x2692
http://www.purl.org/dubuc/cas/