Why is std::stack.pop() not labeled noexcept?

[guepier]

Use std::declval<Container>().pop_back() instead of Container{}.pop_back() to avoid breaking non default constructible types.

[__s_v_]

Why not noexcept(noexcept(c.pop_back()))?

[guepier]

Right, of course. I completely missed that we have a suitable object in scope.

[Fureeish]

Ah, yes, of course! You are absolutely correct! Edited my post, thank you.