1.0.6.36: ALLOW-WITH-INTERRUPTS and interrupt safe WITH-MUTEX &co

[sbcl.git] / src / pcl / cache.lisp

diff --git a/src/pcl/cache.lisp b/src/pcl/cache.lisp
index 5ce3ac1..c559b61 100644 (file)
--- a/src/pcl/cache.lisp
+++ b/src/pcl/cache.lisp
@@ -343,7 +343,10 @@
       (setf length (* 2 length)))
     (tagbody
      :again
-       (setf (cache-vector copy) (make-array length :initial-element '..empty..)
+       ;; Blow way the old vector first, so a GC potentially triggered by
+       ;; MAKE-ARRAY can collect it.
+       (setf (cache-vector copy) #()
+             (cache-vector copy) (make-array length :initial-element '..empty..)
              (cache-depth copy) 0
              (cache-mask copy) (compute-cache-mask length (cache-line-size cache))
              (cache-limit copy) (compute-limit (/ length (cache-line-size cache))))