std::packaged_task::~packaged_task -
std::packaged_task::~packaged_task
~packaged_task();
Abandons the shared state and destroys the stored task object.
As with std::promise::~promise, if the shared state is abandoned before it
was made
ready, an std::future_error exception is stored with the error code
std::future_errc::broken_promise).
This section is incomplete
Reason: no example