Re: Local class problem

The following code does compile with Visual C++ express 2008 but not
with g++ version 4.1.3:

#include <vector>
#include <algorithm>

void foo(std::vector<int>& values)
{
    struct filler {
        filler() : val_(0) {}
        int operator()() { return ++val_; }
        int val_;
    };

    std::generate(values.begin(), values.end(), filler());
}

g++ gives the following error:
local-class.cpp: In function 'void foo(std::vector<int,
std::allocator<int> >&)':
local-class.cpp:12: error: no matching function for call to
'generate(__gnu_cxx::__normal_iterator<int*, std::vector<int,
std::allocator<int> > >, __gnu_cxx::__normal_iterator<int*,
std::vector<int, std::allocator<int> > >, foo(std::vector<int,
std::allocator<int> >&)::filler)'

What's the problem? Visual C++ (and I as well) does certainly know what
function to call. Why doesn't g++? What can be done about it? Note that
struct filler is a throw-away class that I don't want to have in the
global namespace and that I don't even want to have as a nested class in
some other encompassing class of which foo() might be a method.