Dan Barlow <dbarlow@common-lisp.net> writes:

+ ;; XXX is this _ever_ used? By what? *compile-file-truename* + ;; should be set by the implementation inside any call to compile-file

This is mostly used when a compilation condition is signaled at the end of a compilation unit, e.g, "those function <list of functions> are undefined" and also for notes about missing exported symbols in a defpackage form. The same situation occurs in SBCL with the "redefining function <foo>" style warnings. Set a breakpoint at this location to see the details. Helmut.