[Ecls-list] (si:package-lock :cl t)

[Juan Jose Garcia-Ripoll]

I must have removed the lock for some debugging purposes and forgot to
reactivate it!

On Thu, Mar 18, 2010 at 5:32 AM, Matthew Mondor <mm_lists at pulsar-zone.net>wrote:

> Hello,
>
> Since in Common Lisp, using the :USE option of DEFPACKAGE causes
> dynamic binding of exported symbols of the used package into the new
> package, DEFUN is able to override CL functions.  After checking out
> the ECL code, I found out that I can use (SI:PACKAGE-LOCK :CL T) to
> lock the COMMON-LISP package and cause an error to be signaled when
> trying to override a CL symbol this way.
>
> I'm glad that I can use this feature to prevent inadvertent bugs in my
> software (I don't yet remember all CL symbols :).  But some
> implementations (i.e. SBCL) by default lock the CL package.  So I
> wondered: Is there a technical reason why this is not the default for
> ECL?  Or known software which breaks with this?
>
> Thanks,
> --
> Matt
>
>
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