(infinite-error-protect
(let ((condition (coerce-to-condition datum arguments
- 'simple-error 'error))
- (sb!debug:*stack-top-hint* (maybe-find-stack-top-hint)))
+ 'simple-error 'error)))
(/show0 "done coercing DATUM to CONDITION")
+ (/show0 "signalling CONDITION from within ERROR")
(let ((sb!debug:*stack-top-hint* nil))
- (/show0 "signalling CONDITION from within ERROR")
(signal condition))
(/show0 "done signalling CONDITION within ERROR")
- (invoke-debugger condition))))
+ ;; Finding the stack top hint is pretty expensive, so don't do
+ ;; it until we know we need the debugger.
+ (let ((sb!debug:*stack-top-hint* (maybe-find-stack-top-hint)))
+ (invoke-debugger condition)))))
(defun cerror (continue-string datum &rest arguments)
(infinite-error-protect
(let ((condition (coerce-to-condition datum
arguments
'simple-error
- 'cerror))
- (sb!debug:*stack-top-hint* (maybe-find-stack-top-hint)))
+ 'cerror)))
(with-condition-restarts condition (list (find-restart 'continue))
(let ((sb!debug:*stack-top-hint* nil))
(signal condition))
- (invoke-debugger condition)))))
+ (let ((sb!debug:*stack-top-hint* (maybe-find-stack-top-hint)))
+ (invoke-debugger condition))))))
nil)
;;; like BREAK, but without rebinding *DEBUGGER-HOOK* to NIL, so that
(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)))