SBCL

  1. Bug #1395910
  2. Comment #3

Comment 3 for bug 1395910

Revision history for this message
Douglas Katzman (dougk) wrote :

that certainly works. But since we expose SB-EXT:TYPEXPAND to users, it might make sense to catch it there.

* (sb-ext:typexpand 3)
debugger invoked on a TYPE-ERROR:
  The value 3 is not of type (OR CONS SYMBOL SB-KERNEL:INSTANCE).

I'd prefer to see your nice error message.