如何在匿名线程中声明异常？

#include<iostream>
#include<thread>
#include <future>
#include<exception>

void someFunction() {
    // 抛出异常
    throw std::runtime_error("An error occurred");
}

int main() {
    std::promise<void> p;
    std::future<void> f = p.get_future();

    std::thread t([&]() {
        try {
            someFunction();
            p.set_value();
        } catch (...) {
            p.set_exception(std::current_exception());
        }
    });

    try {
        f.get();
    } catch (const std::exception& e) {
        std::cerr << "Caught exception: " << e.what()<< std::endl;
    }

    t.join();
    return 0;
}

#include<iostream>
#include<thread>
#include <future>
#include<exception>

void someFunction() {
    // 抛出异常
    throw std::runtime_error("An error occurred");
}

int main() {
    std::packaged_task<void()> task(someFunction);
    std::future<void> f = task.get_future();

    std::thread t(std::move(task));

    try {
        f.get();
    } catch (const std::exception& e) {
        std::cerr << "Caught exception: " << e.what()<< std::endl;
    }

    t.join();
    return 0;
}