tree a5b5e517d8684af447ee950afeac42dd70e1df57
parent 289d8626b6ff1e2a7bd582b43c918345108f5fda
author Dino Radakovic <dinor@google.com> 1715134178 -0700
committer Copybara-Service <copybara-worker@google.com> 1715134224 -0700

`any_invocable`: Add public documentation for undefined behavior when invoking an empty AnyInvocable

This is currently documented in `internal/any_invocable.h`, but not in the public API.
For example, `std::function` [documents](https://en.cppreference.com/w/cpp/utility/functional/function) the fact that invoking an empty instance throws `std::bad_function_call`.

PiperOrigin-RevId: 631621604
Change-Id: I6b886a805ffa0e7aaef5f6971e1eafd14f94050c