[runtime error] runtime error: load of null pointer of type 'int'

[张泽民]

1. Here is my test code:

int main(int args, char** argv, char** env) {

    seastar::app_template app;

    return app.run(args, argv, [&] {

        auto fut1 = seastar::thread([] {

            std::cout << "test 1" << std::endl;

        });

        return seastar::async([&] {

            std::cout << "test 2" << std::endl;

        });

    });

}

it got errors like:

2. But if add a then() after async() ：

int main(int args, char** argv, char** env) {

    seastar::app_template app;

    return app.run(args, argv, [&] {

        auto fut1 = seastar::thread([] {

            std::cout << "test 1" << std::endl;

        });

        return seastar::async([&] {

            std::cout << "test 2" << std::endl;

        }).then([] {

            std::cout << "test 3" << std::endl;

        });

    });

}

It runs well:

3. FYI:

There is a comment is utils/critical_alloc_section.hh:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97848

Is this the reason?

My gcc version is 11.2.0.

[Benny Halevy]

it looks like fut1 is running in the backgroung without anyone waiting for it.

Add e.g. fut1.get(); inside the async block should do it.

--
You received this message because you are subscribed to the Google Groups "seastar-dev" group.
To unsubscribe from this group and stop receiving emails from it, send an email to seastar-dev...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/seastar-dev/28b17871-80a8-4155-9c56-138ee53534e8n%40googlegroups.com.