Calls a terminate handler.
The function calls a terminate handler, a function of type void. If terminate is called directly by the program, the terminate handler is the one most recently set by a call to set_terminate. If terminate is called for any of several other reasons during evaluation of a throw expression, the terminate handler is the one in effect immediately after evaluating the throw expression.
A terminate handler may not return to its caller. At program startup, the terminate handler is a function that calls abort.