[cl-gd-devel] Funky compile warnings with (with-thickness )

[Edi Weitz]

On Tue, 22 Feb 2005 01:48:14 +0000 (UTC), Rusty Shackleford <rs at natchie.mine.nu> wrote:

> I'm using (with-thickness (5) to draw some lines, and when I compile
> the code (in emacs slime with C-c C-k) I get a bunch of messages
> that look like:
>
> [...]
>
> ;   could not optimize away %SAP-ALIEN: forced to do runtime
> ; allocation of alien-value structure
> ; compilation unit finished
>
> What the heck does this mean?

I'm not using SBCL myself but IIRC similar topics came up several
times on the SBCL mailing lists so you might want to search gmane.org
or ask there.  I'm pretty sure they can explain it better than I
can... :)

Cheers,
Edi.