segfault in CVS HEAD

[Han-Wen Nienhuys <hanwen@xs4all.nl>]

hanwen@xs4all.nl writes:
> hanwen@xs4all.nl writes:
> > 	byrd:~/usr/src/guile/libguile$ cat t.scm
> > 	(defiaine  blub  (cons (quote (1 . 2)) 2))
> > 
> > 
> > for some reason, GUILE unmemoizes the procedure during print; of
> > course, the expression is not memoized, since evaluation stops after
> > "defiaine". I've seen similar problems with invocations of
> > procedure-source on valid code.
> 
> example:
> 
> 	byrd:~/usr/src/guile/libguile$ cat t.scm
> 	(define (blub)  (cons (quote (1 . 2)) 2))
> 	(display (procedure-source blub))
> 	byrd:~/usr/src/guile/libguile$ guile --debug t.scm
> 	Segmentatie fout
> 	byrd:~/usr/src/guile/libguile$ guile t.scm
> 	Segmentatie fout

I've implemented a kludge in CVS: the for loop now has a SCM_CONSP as
the condition. It produces incorrect output in the example that I
sent, but at least it doesn't crash. 


BTW,

why are vectors quoted in the unmemoize output?  from
unmemoize_expression():


  else if (SCM_VECTORP (expr))
    {
      return scm_list_2 (scm_sym_quote, expr);
    }

-- 

 Han-Wen Nienhuys   |   hanwen@xs4all.nl   |   http://www.xs4all.nl/~hanwen 



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