Custom Query (1030 matches)

Running the code in attached file, in which 10 threads cons hysterically, will pretty reliably elicit heap corruption.

From Matt Lamari, see ​http://clozure.com/pipermail/openmcl-devel/2011-May/012827.html.

For CASE forms with suitably small ranges of integer keys, the compiler could generate a jump table (or binary search, or a combination of the two) rather than the obvious linear search.

? (defun test (name) (restart-case (cerror "foo ~s" "bar ~s" name)
			  (a-restart () nil)))
TEST
? (test 'hah)
> Error: bar HAH
> While executing: TEST, in process listener(1).
> Type :GO to continue, :POP to abort, :R for a list of available restarts.
> If continued: foo #<error printing object>

Note the #<error printing object>. The problem seems to be restart-case transforming the cerror call and losing its format args in the process.

(pprint (macroexpand-1 '(restart-case (cerror "foo ~s" "bar ~s" name)
			  (a-restart () nil))))

(BLOCK #:G672
  (LET* ((#:G673 (%CONS-RESTART 'A-RESTART NIL NIL NIL NIL))
         (#:G670 (LIST #:G673)))
    (DECLARE (DYNAMIC-EXTENT #:G673 #:G670))
    (CATCH #:G670
      (LET ((%RESTARTS% (CONS #:G670 %RESTARTS%)))
        (DECLARE (DYNAMIC-EXTENT %RESTARTS%))
        (RETURN-FROM #:G672
          (LET ((#:G671
                 (CONDITION-ARG "bar ~s" (LIST NAME) 'SIMPLE-ERROR)))
            (WITH-CONDITION-RESTARTS
              #:G671
              #:G670
              (CERROR "foo ~s" #:G671)))))))