On Fri, Nov 13, 2009 at 10:42 AM, Matthew Mondor mm_lists@pulsar-zone.net wrote:

Hello,

I noticed lately (using CVS HEAD slime) with CVS HEAD ECL the following error when attempting to define a PRINT-OBJECT method at the REPL:

(defmethod print-object interrupted:

In function SYMBOL-NAME, the value of symbol is        #<STANDARD-GENERIC-FUNCTION PRINT-OBJECT> which is not of expected type SYMBOL   [Condition of type SIMPLE-TYPE-ERROR]

Backtrace:  0: #<bytecompiled-function 097c4d70>      Locals:        SWANK::OPERATOR = DEFMETHOD        SWANK::ARGUMENTS#1 = (PRINT-OBJECT #S(SWANK::ARGLIST-DUMMY :SWANK::STRING-REPRESENTATION ""))        #:G4793#2 = (DEFMETHOD PRINT-OBJECT ..)        SWANK::GF-NAME#3 = PRINT-OBJECT        SWANK::GF#4 = #<STANDARD-GENERIC-FUNCTION PRINT-OBJECT>  1: #<bytecompiled-function ARGLIST-FROM-FORM>      Locals:        SWANK::FORM = (DEFMETHOD PRINT-OBJECT ..)  2: #<bytecompiled-function YIELD>  3: #<bytecompiled-function GROVEL-FORM>  4: #<bytecompiled-function FIND-SUBFORM-WITH-ARGLIST>  5: #<bytecompiled-function 097c4a78>  6: #<bytecompiled-function ARGLIST-FOR-ECHO-AREA>  7: #<bytecompiled-function BYTECODES> [...]

The same actually happens whenever a generic function exists for the method being created.  I have the impression a value which shouldn't be evaluated is, although I didn't look into the related swank-ecl code yet.  Possibly someone else already knows exactly what's happening?

This was fixed by the patch Andy Hefner sent, it's already applied to CVS.