Could you, please, explain why assert can fire? I cannot understand the explanation below. Both if(y.load... and if(x.load... use std::memory_order_acquire. Is not this enough? In the book it’s written that we need seq_cst for assert not to fire. How does seq_cst improve here?

I’ve just started learning multi-threading in C++ and following this excellent tutorial.

I am trying to construct a std::thread with a member function that takes no arguments and returns void. I can’t figure out any syntax that works – the compiler complains no matter what. What is the correct way to implement spawn() so that it returns a std::thread that executes test()?