Re: error or warning during compilation, yet some function is generat ed

> * In message <16048.15.502758.29150@xxxxxxxxxxxxxxxx>
> * On the subject of "Re: [clisp-list] error or warning during compilation, 
> yet some function is generat ed"
> * Sent on Wed, 30 Apr 2003 18:55:43 +0200 (CEST)
> * Honorable Bruno Haible <haible@xxxxxxx> writes:
>
> Sam writes:
> 
> > > ; I.e. an error is reported, yet compilation continues, and returns a
> > > weird function object:
> > 
> > this appears to be the intended behavior in COMPILE-LAMBDA
> > (compiler.lisp)
> > I can easily disable it, but I would love to hear why Bruno introduced it.
> 
> I don't see a good reason anymore not to give an
>     (sys::error-of-type 'sys::source-program-error ...)

either this or just return nil, like we do now in other cases:

[1]> (defun f () (let ((:f 0)) :f))
F
[2]> (compile 'f)

ERROR in F :
Constant :F cannot be bound.
NIL ;
1 ;
1
[3]> (setq f (lambda () (let ((:f 0)) :f)))
#<CLOSURE :LAMBDA NIL (LET ((:F 0)) :F)>
[6]> (compile nil f)

ERROR :
Constant :F cannot be bound.
NIL ;
1 ;
1

returning NIL would violate the rule that (lambda ...) returns a
function, so, I guess, an error is better.

-- 
Sam Steingold (http://www.podval.org/~sds) running RedHat9 GNU/Linux
<http://www.camera.org> <http://www.iris.org.il> <http://www.memri.org/>
<http://www.mideasttruth.com/> <http://www.palestine-central.com/links.html>
There is an exception to every rule, including this one.


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