;;; Skip the whole damn test on GENCGC PPC -- the combination is just
;;; to flaky for this to make too much sense.
-#-(and ppc gencgc)
+;; #-(and ppc gencgc)
+
+;;; It appears that this test can fail due to systematic issues (possibly
+;;; with the C compiler used) which we cannot detect based on *features*.
+;;; Until this issue has been fixed, I am disabling this test entirely to
+;;; to allow installation of the contrib on affected builds. C.f. lp1057631.
+;;; --DFL
+#-gencgc
(deftest allocation-information.4
#+gencgc
(tai #'cons :heap