#if defined(__clang__) && defined(__has_warning)
# if __has_warning( "-Wdeprecated-declarations" )
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
# endif
#endif
#if defined(__GNUC__) && __GNUC__ >= 12
# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
#include <boost/function.hpp>
#include <iostream>
#include <functional>
struct X {
int foo(int);
};
int X::foo(int x) { return -x; }
int main()
{
#ifndef BOOST_NO_CXX98_BINDERS
boost::function<int (int)> f;
X x;
f = std::bind1st(
std::mem_fun(&X::foo), &x);
f(5); #endif
return 0;
}