c++ - 我不知道为什么这个 static_assert() 代码不起作用

Question

这是代码:

#pragma once

#include <stdint.h>

namespace Detours
{
    static_assert(sizeof(uintptr_t) == sizeof(void *));
}

我收到此错误消息:

Error (active) E2783 expected a comma (the one-argument version of static_assert is not enabled in this mode)

Answer 1

static_assert声明允许 message自 C++17 起将被省略的参数。 ( cppreference )
您需要在编译器中启用 C++17，或者完成 message参数这样:

static_assert(sizeof(uintptr_t) == sizeof(void *), "The message you want to show.");

也可以看看
How to enable C++17 compiling in Visual Studio?