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;;; Assert that "old" symbol tables do not cause garbage retention
;;; (even if pseudo-static!) because they get zero-filled.
;;; CL-USER's internals aren't empty, merely because of READINg this file.
;;; So use the externals, of which there should be none.
(defun extern (name)
(let ((s (make-symbol name))
(p *package*))
(sb-impl::add-symbol (sb-impl::package-external-symbols *package*) s 'intern)
(sb-impl::%set-symbol-package s p)
s))
(with-test (:name :empty-package-starts-with-readonly-tables)
(extern "X")
(extern "Y")
(extern "Z")
(let ((wps (mapcar (lambda (name) (make-weak-pointer (find-symbol name)))
'("X" "Y" "Z"))))
(unintern (find-symbol "Z"))
(unintern (find-symbol "X"))
(unintern (find-symbol "Y"))
(sb-sys:scrub-control-stack)
(gc)
(assert (< (count-if #'weak-pointer-value wps) 3))))
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