Where is std::copy_exception defined?
<p>The book <em><a href="http://www.cplusplusconcurrencyinaction.com/" rel="noreferrer">C++ Concurrency in Action</a></em> by Anthony Williams states in <em>4.2.4 Saving an exception for the future</em> that it is possible to store an exception directly without throwing using <code>std::copy_exception</code>. However I seem to be unable to find the standard library header where <code>std::copy_exception</code> is defined. Where can I find it?</p>