[Sbcl-help] WITH-COMPILATION-UNIT changes results of COMPILE-FILE

[Ilya P. <ipe...@dw...>]

Hi,

If compilation of a file produces "undefined variable" warnings,
the seconds and the third results of COMPILE-FILE (warnings-p,
failure-p) are T, as expected.
If I wrap the COMPILE-FILE call with WITH-COMPILATION-UNIT, the results
are NIL. Example:
====== f.lisp ====
(defun foo () 
  (+ a b))
==================
(compile-file "f.lisp") ;; => "f.fasl" T T
(with-compilation-unit () (compile-file "f.lisp")) ;; => "f.fasl" NIL NIL

I am not sure whether it is a bug in WITH-COMPILATION-UNIT, because its
description is a bit vague.
ASDF uses WITH-COMPILATION-UNIT in several places and, as a result, does
not report "undefined variable" warnings as errors even when
*COMPILE-FILE-FAILURE-BEHAVIOUR* is :ERROR (which is the default).

Ilya