GCC 中的 std::put_time 实现状态?

I was trying to compile this example program using GCC (tested versions 4.5.1, 4.6.3, 4.8.4):

#include <iostream>
#include <iomanip>
#include <ctime>
#include <chrono>

using std::chrono::system_clock;

int main()
{
    system_clock::time_point now = system_clock::now();
    std::time_t now_c = system_clock::to_time_t(
                            now - std::chrono::hours(24));
    std::cout << "One day ago, the time was "
              << std::put_time(std::localtime(&now_c), "%F %T") << '
';
}

但它告诉我:

prog.cpp: In function 'int main()':
prog.cpp:14:18: error: 'put_time' is not a member of 'std'

<小时>

我想，可能还没有实现.所以我试图检查这个函数的实现状态.我只找到了这个页面: