+(defmacro with-interrupt-bindings (&body body)
+ (with-unique-names (empty)
+ `(let*
+ ;; KLUDGE: Whatever is on the PCL stacks before the interrupt
+ ;; handler runs doesn't really matter, since we're not on the
+ ;; same call stack, really -- and if we don't bind these (esp.
+ ;; the cache one) we can get a bogus metacircle if an interrupt
+ ;; handler calls a GF that was being computed when the interrupt
+ ;; hit.
+ ((sb!pcl::*cache-miss-values-stack* nil)
+ (sb!pcl::*dfun-miss-gfs-on-stack* nil)
+ ;; Unless we do this, ADJUST-ARRAY and SORT would need to
+ ;; disable interrupts.
+ (,empty (vector))
+ (sb!impl::*zap-array-data-temp* ,empty)
+ (sb!impl::*merge-sort-temp-vector* ,empty))
+ ,@body)))
+