strange c++ compile errors

[crash3m]

During the 3rd meeting Hal brought up my problem with a little c++
program. 

#include <iostream.h>

int main()
{
	cout << "Welcome to GNU C++ for Linux Programming!" << endl;
	return 0;
}

when compiled using 'c++ welcome.cpp' I get

/usr/include/g++-2/streambuf.h: In method 'struct streampos
streambuf::pubseekoff(streamoff, enum _seek_dir, int = 3)': 
In file included from /usr/include/g++-2/streambuf.h:362 conversion from
'__off64_t' to non-scalar type 'streampos' requested
/usr/include/g++-2/streambuf.h:364: 'struct streampos' used where a
'__off64_t' was expected

I'm using ecgs-2.91.66...