[armedbear-devel] bug in FASL loader

Alessio Stalla alessiostalla at gmail.com
Mon Jul 23 22:40:21 UTC 2012

On Mon, Jul 23, 2012 at 6:48 PM, Durward McDonell
<durward.mcdonell at jhuapl.edu> wrote:
> Hello.
> I believe I have found a bug in FASL loading, with respect
> to *read-base* being reset. At least, I get the behavior I
> expect in sbcl, and not in abcl.
> Consider the following code:
> (defmacro foo-bar (s)
>   `(sublis '((foo . bar)) ,s))
> (defun foo-bar-rb ()
>   (let ((*read-base* #x10)
>         (it (read)))
>     (eval it)))
> Load this code, then execute (foo-bar-rb).
> It will wait for input. Type (foo-bar '(foo)).
> I would expect this to evaluate to (bar), but
> abcl gives a FASL version mismatch, where it
> seems that it is reading the FASL in the new
> base (16 instead of 10), and reports "found '56'
> but expected '38' in sublis".


What FASL are you speaking of? There is nothing explicitly loading one
in your code. Is this related to autoloading?


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