Re: MKCL fails when non-erroneous condition is signaled

On Sun, Jul 23, 2017 at 7:49 PM, Faré fare@tunes.org wrote:

Regarding these ASDF failures on MKCL:

• test-program was a bug in my latest ASDF tweaks, now fixes.
• test-bundle and test3 smell like another case where MKCL errors out

due to non-serious conditions being signalled, this time inside a require.

It does smell fishy in that area now that you mention it. Investigating...

• test-defsystem-depends-on-phase-overlap.script is because said test

tries to undefine a class using (setf (find-class 'asdf::my-cl-source-file) nil) and MKCL disapproves, unlike all other tested CL implementations, erroring with: "TEST ABORTED: NIL is not of type SI:INSTANCE." Is that a compliant way to undefine a class? If not, is there one and what is it?

This is clearly a bug in MKCL! Your attempt at undefining a class is directly in line with "Issue SETF-FIND-CLASS Writeup" annexed to the ANSI-CL standard.