[slime-devel] swank-ecl method/generic function lambda list printing bug

[Stas Boukarev]

On Fri, Nov 13, 2009 at 10:42 AM, Matthew Mondor
<mm_lists at 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.

-- 
With best regards, Stas.