Re: issue: class field and its usage from lambda

[Per Bothner <per at bothner dot com>]

On 08/07/2012 09:05 AM, Fushacko Tito wrote:
> (define-class FailClass ()
>    (x ::float access: 'private init: 0.0)
>
>    ((wrap-x) (lambda () x))
>
>    ((calculate-position)
>     (letrec ( (wrap-func  (lambda () (wrap-x))) )
>       (wrap-func))))
>
> For both Kawa 1.12.1 (revision 7282) and Kawa 1.12 release i got this traceback:
> [imdagger@blacktears]$ java -jar /home/imdagger/kawa/kawa/kawa-1.12.1.jar -C test.scm
> (compiling test.scm to test)
> test.scm:4: internal error while compiling test.scm
> java.lang.NullPointerException
> 	at gnu.expr.LambdaExp.setCallersNeedStaticLink(LambdaExp.java:209)

I checked in a fix for this in the Subversion repository.

This is related to using define-class rather than define-simple-class;
the manual discusses the difference:
http://www.gnu.org/software/kawa/Defining-new-classes.html
--
	--Per Bothner
per@bothner.com   http://per.bothner.com/