Dear Slimers,
If you hit C-c C-c on a form with an egregious error, say
(defun foo () (throw 'end-of-line)) ;; SHould be (throw 'end-of-line nil) !
[Note the missing value in throw you get the rather unhelpful error in the slime `sldb' buffer (expanded, in case it helps debugging)
================================================================ Argument NIL is not of type PATHNAME, STRING, or FILE-STREAM. [Condition of type SIMPLE-TYPE-ERROR]
Restarts: 0: [ABORT] Return to Slime event loop. 1: [ABORT] Wait for another connection for service 4005. 2: [ABORT] Quit process.
Backtrace: 0: GET-CALL-FRAME (FRAME-POINTER PREV-FRAME) 1: SWANK-DEBUGGER-HOOK (CONDITION HOOK) 2: DEBUG1 (&OPTIONAL DATUM &REST ARGUMENTS) 3: INVOKE-DEBUGGER (&REST X) 4: CONDITIONS-ERROR (INVISIBLEP T DATUM ARGUMENTS) 5: MERGE-PATHNAMES (PATHNAME &OPTIONAL DEFAULTS DEFAULT-VERSION) 6: CANONICAL-PATHNAME (PATHNAME &OPTIONAL NONDESTRUCTIVEP WILDP) 7: OS-CANONICAL-NAMESTRING (PATHSPEC) 8: DELETE-FILE-OR-DIRECTORY (NAME ERROR DELETE-FUNC) 9: #<DBG::CATCH-FRAME > 10: COMPILE-FROM-TEMP-FILE (STRING FILENAME) 11: (SUBFUNCTION 1 (METHOD COMPILE-STRING-FOR-EMACS (T))) NIL 12: DO-COMPILATION-UNIT (CONTINUATION DO-MESSAGES SUMMARIZE) 13: WITH-COMPILATION-UNIT-INTERNAL (CONTINUATION &KEY OVERRIDE SUMMARIZE ENVIRONMENT) 14: (METHOD COMPILE-STRING-FOR-EMACS (T)) (STRING &KEY BUFFER POSITION) 15: (SUBFUNCTION 1 SWANK-COMPILE-STRING) NIL 16: MEASURE-TIME-INTERVAL (FN) 17: SWANK-COMPILE-STRING (STRING BUFFER POSITION) 18: %EVAL-NOHOOK (EXP) 19: PROCESS-TOP-LEVEL (*CURRENT-FORM* ENV CONT &OPTIONAL MODE) 20: #<DBG::CATCH-FRAME > 21: EVAL-STRING (STRING BUFFER-PACKAGE) 22: FUNCALL (FUNCTION &REST ARGS) 23: CALL-WITH-SLIME-STREAMS (IN OUT IO FN ARGS) 24: READ-FROM-EMACS NIL 25: #<DBG::CATCH-FRAME > 26: #<DBG::CATCH-FRAME > 27: #<DBG::CATCH-FRAME > 28: REQUEST-LOOP NIL 29: SWANK-ACCEPT-CONNECTION (FD) 30: #<DBG::CATCH-FRAME > 31: LISTEN-AND-ATTACH-STREAM-FROM-SOCKET (SOCKET FUNCTION) 32: #<DBG::CATCH-FRAME > 33: LISTEN-AND-ATTACH-STREAM (FUNCTION &OPTIONAL SERVICE ANNOUNCE BACKLOG ADDRESS) 34: #<DBG::CATCH-FRAME > 35: LISTEN-AND-ATTACH-STREAM-PROTECTED (FUNCTION SERVICE ANNOUNCE BACKLOG ADDRESS) 36: #<DBG::CATCH-FRAME > 37: #<DBG::CATCH-FRAME > 38: #<DBG::CATCH-FRAME > 39: (SUBFUNCTION PROCESS-SG-FUNCTION INITIALIZE-PROCESS-STACK) (IGNORED) --more--