(defun break (&optional (datum "break") &rest arguments)
#!+sb-doc
"Print a message and invoke the debugger without allowing any possibility
- of condition handling occurring."
+of condition handling occurring."
+ (declare (optimize (sb!c::rest-conversion 0)))
(let ((*debugger-hook* nil)) ; as specifically required by ANSI
(apply #'%break 'break datum arguments)))