std :: put_time在GCC的实现状态？ [英] std::put_time implementation status in GCC?

问题描述

我试图使用GCC（测试版本4.5.1,4.6）来编译此示例程序。 3，4.8.4）：

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") << '\n';
}

但它告诉我：

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

---

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。我只找到此网页：

---

I thought, probably it's not implemented yet. So I tried to check the implementation status for this function. I only found this page:

• http://gcc.gnu.org/projects/cxx0x.html

• http://gcc.gnu.org/projects/cxx0x.html

但我找不到任何注释 put_time 或 chrono 等。任何人都可以指向我提供有关此库实施状态信息的资源。

but there I could not find any note on put_time or chrono or alike. Can anyone point me to a resource that provides information on the implementation status for this library?

推荐答案

请参阅 TODO扩展iomanip操纵器std :: get_time和std :: put_time for gcc 4.8.0。

See TODO extended iomanip manipulators std::get_time and std::put_time for gcc 4.8.0.

另请参阅跨平台方式来获取一天的时间声明未实现4.7.0。

See also Cross Platform way to get the time of day? claiming that is not implemented in 4.7.0.

UPDATE：作为gcc开发人员 Jonathan Wakely确认如下： std :: gcc 4.9中仍然缺少get_time 和 std :: put_time 操纵器。

UPDATE: As the gcc developer Jonathan Wakely confirmed below: The std::get_time and std::put_time manipulators are still missing in gcc 4.9.

更新： Jonathan Wakely 关闭这张票于2014年12月22日：

UPDATE: Jonathan Wakely closed this ticket on 22 Dec, 2014:

修正了GCC 5

Fixed for GCC 5

感谢 simonwo 通知我们。

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