X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tests%2Fdynamic-extent.impure.lisp;h=4c1bf5733a9711058a6f5c62f88c8bab08aa3c4b;hb=2230ea0c1765a95fd2aa0a8996b3555b93ba3745;hp=d82513d2cb448b837c6b89b25c2e0ff157255e0e;hpb=f7ba8c211a140c8c517c1122581dae63bedf672a;p=sbcl.git

diff --git a/tests/dynamic-extent.impure.lisp b/tests/dynamic-extent.impure.lisp
index d82513d..4c1bf57 100644
--- a/tests/dynamic-extent.impure.lisp
+++ b/tests/dynamic-extent.impure.lisp
@@ -14,13 +14,12 @@
 (when (eq sb-ext:*evaluator-mode* :interpret)
   (sb-ext:quit :unix-status 104))
 
-(setq sb-c::*check-consistency* t)
+(setq sb-c::*check-consistency* t
+      sb-ext:*stack-allocate-dynamic-extent* t)
 
 (defmacro defun-with-dx (name arglist &body body)
-  `(locally
-     (declare (optimize sb-c::stack-allocate-dynamic-extent))
-     (defun ,name ,arglist
-       ,@body)))
+  `(defun ,name ,arglist
+     ,@body))
 
 (declaim (notinline opaque-identity))
 (defun opaque-identity (x)
@@ -130,9 +129,9 @@
 
 (defun-with-dx dx-value-cell (x)
   ;; Not implemented everywhere, yet.
-  #+(or x86 x86-64 mips)
+  #+(or x86 x86-64 mips hppa)
   (let ((cell x))
-    (declare (dynamic-extent cell))
+    (declare (sb-int:truly-dynamic-extent cell))
     (flet ((f ()
              (incf cell)))
       (declare (dynamic-extent #'f))
@@ -146,6 +145,238 @@
     (true cons)
     nil))
 
+;;; MAKE-ARRAY
+
+(defun force-make-array-on-stack (n)
+  (declare (optimize safety))
+  (let ((v (make-array (min n 1))))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx make-array-on-stack-1 ()
+  (let ((v (make-array '(42) :element-type 'single-float)))
+    (declare (dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx make-array-on-stack-2 (n x)
+  (declare (integer n))
+  (let ((v (make-array n :initial-contents x)))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx make-array-on-stack-3 (x y z)
+  (let ((v (make-array 3
+                       :element-type 'fixnum :initial-contents (list x y z)
+                       :element-type t :initial-contents x)))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx make-array-on-stack-4 ()
+  (let ((v (make-array 3 :initial-contents '(1 2 3))))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx make-array-on-stack-5 ()
+  (let ((v (make-array 3 :initial-element 12 :element-type t)))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+(defun-with-dx vector-on-stack (x y)
+  (let ((v (vector 1 x 2 y 3)))
+    (declare (sb-int:truly-dynamic-extent v))
+    (true v)
+    nil))
+
+;;; MAKE-STRUCTURE
+
+(declaim (inline make-fp-struct-1))
+(defstruct fp-struct-1
+  (s 0.0 :type single-float)
+  (d 0.0d0 :type double-float))
+
+(defun-with-dx test-fp-struct-1.1 (s d)
+  (let ((fp (make-fp-struct-1 :s s)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-1-s fp)))
+    (assert (eql 0.0d0 (fp-struct-1-d fp)))))
+
+(defun-with-dx test-fp-struct-1.2 (s d)
+  (let ((fp (make-fp-struct-1 :d d)))
+    (declare (dynamic-extent fp))
+    (assert (eql 0.0 (fp-struct-1-s fp)))
+    (assert (eql d (fp-struct-1-d fp)))))
+
+(defun-with-dx test-fp-struct-1.3 (s d)
+  (let ((fp (make-fp-struct-1 :d d :s s)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-1-s fp)))
+    (assert (eql d (fp-struct-1-d fp)))))
+
+(defun-with-dx test-fp-struct-1.4 (s d)
+  (let ((fp (make-fp-struct-1 :s s :d d)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-1-s fp)))
+    (assert (eql d (fp-struct-1-d fp)))))
+
+(test-fp-struct-1.1 123.456 876.243d0)
+(test-fp-struct-1.2 123.456 876.243d0)
+(test-fp-struct-1.3 123.456 876.243d0)
+(test-fp-struct-1.4 123.456 876.243d0)
+
+(declaim (inline make-fp-struct-2))
+(defstruct fp-struct-2
+  (d 0.0d0 :type double-float)
+  (s 0.0 :type single-float))
+
+(defun-with-dx test-fp-struct-2.1 (s d)
+  (let ((fp (make-fp-struct-2 :s s)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-2-s fp)))
+    (assert (eql 0.0d0 (fp-struct-2-d fp)))))
+
+(defun-with-dx test-fp-struct-2.2 (s d)
+  (let ((fp (make-fp-struct-2 :d d)))
+    (declare (dynamic-extent fp))
+    (assert (eql 0.0 (fp-struct-2-s fp)))
+    (assert (eql d (fp-struct-2-d fp)))))
+
+(defun-with-dx test-fp-struct-2.3 (s d)
+  (let ((fp (make-fp-struct-2 :d d :s s)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-2-s fp)))
+    (assert (eql d (fp-struct-2-d fp)))))
+
+(defun-with-dx test-fp-struct-2.4 (s d)
+  (let ((fp (make-fp-struct-2 :s s :d d)))
+    (declare (dynamic-extent fp))
+    (assert (eql s (fp-struct-2-s fp)))
+    (assert (eql d (fp-struct-2-d fp)))))
+
+(test-fp-struct-2.1 123.456 876.243d0)
+(test-fp-struct-2.2 123.456 876.243d0)
+(test-fp-struct-2.3 123.456 876.243d0)
+(test-fp-struct-2.4 123.456 876.243d0)
+
+(declaim (inline make-cfp-struct-1))
+(defstruct cfp-struct-1
+  (s (complex 0.0) :type (complex single-float))
+  (d (complex 0.0d0) :type (complex double-float)))
+
+(defun-with-dx test-cfp-struct-1.1 (s d)
+  (let ((cfp (make-cfp-struct-1 :s s)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-1-s cfp)))
+    (assert (eql (complex 0.0d0) (cfp-struct-1-d cfp)))))
+
+(defun-with-dx test-cfp-struct-1.2 (s d)
+  (let ((cfp (make-cfp-struct-1 :d d)))
+    (declare (dynamic-extent cfp))
+    (assert (eql (complex 0.0) (cfp-struct-1-s cfp)))
+    (assert (eql d (cfp-struct-1-d cfp)))))
+
+(defun-with-dx test-cfp-struct-1.3 (s d)
+  (let ((cfp (make-cfp-struct-1 :d d :s s)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-1-s cfp)))
+    (assert (eql d (cfp-struct-1-d cfp)))))
+
+(defun-with-dx test-cfp-struct-1.4 (s d)
+  (let ((cfp (make-cfp-struct-1 :s s :d d)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-1-s cfp)))
+    (assert (eql d (cfp-struct-1-d cfp)))))
+
+(test-cfp-struct-1.1 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-1.2 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-1.3 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-1.4 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+
+(declaim (inline make-cfp-struct-2))
+(defstruct cfp-struct-2
+  (d (complex 0.0d0) :type (complex double-float))
+  (s (complex 0.0) :type (complex single-float)))
+
+(defun-with-dx test-cfp-struct-2.1 (s d)
+  (let ((cfp (make-cfp-struct-2 :s s)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-2-s cfp)))
+    (assert (eql (complex 0.0d0) (cfp-struct-2-d cfp)))))
+
+(defun-with-dx test-cfp-struct-2.2 (s d)
+  (let ((cfp (make-cfp-struct-2 :d d)))
+    (declare (dynamic-extent cfp))
+    (assert (eql (complex 0.0) (cfp-struct-2-s cfp)))
+    (assert (eql d (cfp-struct-2-d cfp)))))
+
+(defun-with-dx test-cfp-struct-2.3 (s d)
+  (let ((cfp (make-cfp-struct-2 :d d :s s)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-2-s cfp)))
+    (assert (eql d (cfp-struct-2-d cfp)))))
+
+(defun-with-dx test-cfp-struct-2.4 (s d)
+  (let ((cfp (make-cfp-struct-2 :s s :d d)))
+    (declare (dynamic-extent cfp))
+    (assert (eql s (cfp-struct-2-s cfp)))
+    (assert (eql d (cfp-struct-2-d cfp)))))
+
+(test-cfp-struct-2.1 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-2.2 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-2.3 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+(test-cfp-struct-2.4 (complex 0.123 123.456) (complex 908132.41d0 876.243d0))
+
+(declaim (inline make-foo1 make-foo2 make-foo3))
+(defstruct foo1 x)
+
+(defun-with-dx make-foo1-on-stack (x)
+  (let ((foo (make-foo1 :x x)))
+    (declare (dynamic-extent foo))
+    (assert (eql x (foo1-x foo)))))
+
+(defstruct foo2
+  (x 0.0 :type single-float)
+  (y 0.0d0 :type double-float)
+  a
+  b
+  c)
+
+(defmacro assert-eql (expected got)
+  `(let ((exp ,expected)
+         (got ,got))
+     (unless (eql exp got)
+       (error "Expected ~S, got ~S!" exp got))))
+
+(defun-with-dx make-foo2-on-stack (x y)
+  (let ((foo (make-foo2 :y y :c 'c)))
+    (declare (dynamic-extent foo))
+    (assert-eql 0.0 (foo2-x foo))
+    (assert-eql y (foo2-y foo))
+    (assert-eql 'c (foo2-c foo))
+    (assert-eql nil (foo2-b foo))))
+
+;;; Check that constants work out as argument for all relevant
+;;; slot types.
+(defstruct foo3
+  (a 0 :type t)
+  (b 1 :type fixnum)
+  (c 2 :type sb-vm:word)
+  (d 3.0 :type single-float)
+  (e 4.0d0 :type double-float))
+(defun-with-dx make-foo3-on-stack ()
+  (let ((foo (make-foo3)))
+    (declare (dynamic-extent foo))
+    (assert (eql 0 (foo3-a foo)))
+    (assert (eql 1 (foo3-b foo)))
+    (assert (eql 2 (foo3-c foo)))
+    (assert (eql 3.0 (foo3-d foo)))
+    (assert (eql 4.0d0 (foo3-e foo)))))
+
 ;;; Nested DX
 
 (defun-with-dx nested-dx-lists ()
@@ -179,6 +410,29 @@
       (setf (car x) nil))
     nil))
 
+(defparameter *bar* nil)
+(declaim (inline make-nested-bad make-nested-good))
+(defstruct (nested (:constructor make-nested-bad (&key bar &aux (bar (setf *bar* bar))))
+                   (:constructor make-nested-good (&key bar)))
+  bar)
+
+(defun-with-dx nested-good (y)
+  (let ((x (list (list (make-nested-good :bar (list (list (make-nested-good :bar (list y)))))))))
+    (declare (dynamic-extent x))
+    (true x)))
+
+(defun-with-dx nested-bad (y)
+  (let ((x (list (list (make-nested-bad :bar (list (list (make-nested-bad :bar (list y)))))))))
+    (declare (dynamic-extent x))
+    (unless (equalp (caar x) (make-nested-good :bar *bar*))
+      (error "got ~S, wanted ~S" (caar x) (make-nested-good :bar *bar*)))
+    (caar x)))
+
+(with-test (:name :conservative-nested-dx)
+  ;; NESTED-BAD should not stack-allocate :BAR due to the SETF.
+  (assert (equalp (nested-bad 42) (make-nested-good :bar *bar*)))
+  (assert (equalp *bar* (list (list (make-nested-bad :bar (list 42)))))))
+
 ;;; multiple uses for dx lvar
 
 (defun-with-dx multiple-dx-uses ()
@@ -189,7 +443,23 @@
     (true dx)
     nil))
 
-;;; with-spinlock should use DX and not cons
+;;; handler-case and handler-bind should use DX internally
+
+(defun dx-handler-bind (x)
+  (handler-bind ((error
+                  (lambda (c) (break "OOPS: ~S caused ~S" x c)))
+                 ((and serious-condition (not error))
+                  #'(lambda (c) (break "OOPS2: ~S did ~S" x c))))
+    (/ 2 x)))
+
+(defun dx-handler-case (x)
+  (assert (zerop (handler-case (/ 2 x)
+                   (error (c)
+                     (break "OOPS: ~S caused ~S" x c))
+                   (:no-error (res)
+                     (1- res))))))
+
+;;; with-spinlock and with-mutex should use DX and not cons
 
 (defvar *slock* (sb-thread::make-spinlock :name "slocklock"))
 
@@ -197,6 +467,12 @@
   (sb-thread::with-spinlock (*slock*)
     (true *slock*)))
 
+(defvar *mutex* (sb-thread::make-mutex :name "mutexlock"))
+
+(defun test-mutex ()
+  (sb-thread:with-mutex (*mutex*)
+    (true *mutex*)))
+
 ;;; not really DX, but GETHASH and (SETF GETHASH) should not cons
 
 (defvar *table* (make-hash-table))
@@ -227,28 +503,55 @@
 
 (defvar *a-cons* (cons nil nil))
 
-#+(or x86 x86-64 alpha ppc sparc mips)
 (progn
+  #+stack-allocatable-closures
   (assert-no-consing (dxclosure 42))
-  (assert-no-consing (dxlength 1 2 3))
-  (assert-no-consing (dxlength t t t t t t))
-  (assert-no-consing (dxlength))
-  (assert-no-consing (dxcaller 1 2 3 4 5 6 7))
-  (assert-no-consing (test-nip-values))
-  (assert-no-consing (test-let-var-subst1 17))
-  (assert-no-consing (test-let-var-subst2 17))
-  (assert-no-consing (test-lvar-subst 11))
+  #+stack-allocatable-lists
+  (progn
+    (assert-no-consing (dxlength 1 2 3))
+    (assert-no-consing (dxlength t t t t t t))
+    (assert-no-consing (dxlength))
+    (assert-no-consing (dxcaller 1 2 3 4 5 6 7))
+    (assert-no-consing (test-nip-values))
+    (assert-no-consing (test-let-var-subst1 17))
+    (assert-no-consing (test-let-var-subst2 17))
+    (assert-no-consing (test-lvar-subst 11))
+    (assert-no-consing (nested-dx-lists))
+    (assert-consing (nested-dx-not-used *a-cons*))
+    (assert-no-consing (nested-evil-dx-used *a-cons*))
+    (assert-no-consing (multiple-dx-uses)))
   (assert-no-consing (dx-value-cell 13))
-  (assert-no-consing (cons-on-stack 42))
-  (assert-no-consing (nested-dx-conses))
-  (assert-no-consing (nested-dx-lists))
-  (assert-consing (nested-dx-not-used *a-cons*))
-  (assert-no-consing (nested-evil-dx-used *a-cons*))
-  (assert-no-consing (multiple-dx-uses))
+  #+stack-allocatable-fixed-objects
+  (progn
+    (assert-no-consing (cons-on-stack 42))
+    (assert-no-consing (make-foo1-on-stack 123))
+    (assert-no-consing (nested-good 42))
+    (assert-no-consing (nested-dx-conses))
+    (assert-no-consing (dx-handler-bind 2))
+    (assert-no-consing (dx-handler-case 2)))
+  #+stack-allocatable-vectors
+  (progn
+    (assert-no-consing (force-make-array-on-stack 128))
+    (assert-no-consing (make-array-on-stack-1))
+    (assert-no-consing (make-array-on-stack-2 5 '(1 2.0 3 4.0 5)))
+    (assert-no-consing (make-array-on-stack-3 9 8 7))
+    (assert-no-consing (make-array-on-stack-4))
+    (assert-no-consing (make-array-on-stack-5))
+    (assert-no-consing (vector-on-stack :x :y)))
+  (let (a b)
+    (setf a 1.24 b 1.23d0)
+    (#+raw-instance-init-vops assert-no-consing
+     #-raw-instance-init-vops progn
+     (make-foo2-on-stack a b)))
+  (#+raw-instance-init-vops assert-no-consing
+   #-raw-instance-init-vops progn
+   (make-foo3-on-stack))
   ;; Not strictly DX..
   (assert-no-consing (test-hash-table))
   #+sb-thread
-  (assert-no-consing (test-spinlock)))
+  (progn
+    (assert-no-consing (test-spinlock))
+    (assert-no-consing (test-mutex))))
 
 
 ;;; Bugs found by Paul F. Dietz
@@ -289,8 +592,10 @@
   (let ((a (make-array 11 :initial-element 0)))
     (declare (dynamic-extent a))
     (assert (every (lambda (x) (eql x 0)) a))))
-(bdowning-2005-iv-16)
-
+(with-test (:name :bdowning-2005-iv-16)
+  #+(or hppa mips x86 x86-64)
+  (assert-no-consing (bdowning-2005-iv-16))
+  (bdowning-2005-iv-16))
 
 (defun-with-dx let-converted-vars-dx-allocated-bug (x y z)
   (let* ((a (list x y z))
@@ -298,7 +603,197 @@
          (c (list a b)))
     (declare (dynamic-extent c))
     (values (first c) (second c))))
-(multiple-value-bind (i j) (let-converted-vars-dx-allocated-bug 1 2 3)
-  (assert (and (equal i j)
-               (equal i (list 1 2 3)))))
+
+(with-test (:name :let-converted-vars-dx-allocated-bug)
+  (multiple-value-bind (i j) (let-converted-vars-dx-allocated-bug 1 2 3)
+    (assert (and (equal i j)
+                 (equal i (list 1 2 3))))))
+
+;;; workaround for bug 419 -- real issue remains, but check that the
+;;; bandaid holds.
+(defun-with-dx bug419 (x)
+  (multiple-value-call #'list
+    (eval '(values 1 2 3))
+    (let ((x x))
+      (declare (dynamic-extent x))
+      (flet ((mget (y)
+               (+ x y))
+             (mset (z)
+               (incf x z)))
+        (declare (dynamic-extent #'mget #'mset))
+        ((lambda (f g) (eval `(progn ,f ,g (values 4 5 6)))) #'mget #'mset)))))
+(assert (equal (bug419 42) '(1 2 3 4 5 6)))
+
+;;; Multiple DX arguments in a local function call
+(defun test-dx-flet-test (fun n f1 f2 f3)
+  (let ((res (with-output-to-string (s)
+               (assert (eql n (ignore-errors (funcall fun s)))))))
+    (multiple-value-bind (x pos) (read-from-string res nil)
+      (assert (equalp f1 x))
+      (multiple-value-bind (y pos2) (read-from-string res nil nil :start pos)
+        (assert (equalp f2 y))
+        (assert (equalp f3 (read-from-string res nil nil :start pos2))))))
+  #+(or hppa mips x86 x86-64)
+  (assert-no-consing (assert (eql n (funcall fun nil))))
+  (assert (eql n (funcall fun nil))))
+(macrolet ((def (n f1 f2 f3)
+             (let ((name (sb-pcl::format-symbol :cl-user "DX-FLET-TEST.~A" n)))
+               `(progn
+                  (defun-with-dx ,name (s)
+                    (flet ((f (x)
+                             (declare (dynamic-extent x))
+                             (when s
+                               (print x s)
+                               (finish-output s))
+                             nil))
+                      (f ,f1)
+                      (f ,f2)
+                      (f ,f3)
+                      ,n))
+                  (test-dx-flet-test #',name ,n ,f1 ,f2 ,f3)))))
+  (def 0 (list :one) (list :two) (list :three))
+  (def 1 (make-array 128) (list 1 2 3 4 5 6 7 8) (list 'list))
+  (def 2 (list 1) (list 2 3) (list 4 5 6 7)))
+
+;;; Test that unknown-values coming after a DX value won't mess up the stack analysis
+(defun test-update-uvl-live-sets (x y z)
+ (declare (optimize speed (safety 0)))
+ (flet ((bar (a b)
+          (declare (dynamic-extent a))
+          (eval `(list (length ',a) ',b))))
+   (list (bar x y)
+         (bar (list x y z)                  ; dx push
+              (list
+               (multiple-value-call 'list
+                 (eval '(values 1 2 3))     ; uv push
+                 (max y z)
+               )                            ; uv pop
+               14)
+         ))))
+(assert (equal '((0 4) (3 ((1 2 3 5) 14))) (test-update-uvl-live-sets #() 4 5)))
+
+(with-test (:name :regression-1.0.23.38)
+  (compile nil '(lambda ()
+                 (flet ((make (x y)
+                          (let ((res (cons x x)))
+                            (setf (cdr res) y)
+                            res)))
+                   (declaim (inline make))
+                   (let ((z (make 1 2)))
+                     (declare (dynamic-extent z))
+                     (print z)
+                     t))))
+  (compile nil '(lambda ()
+                 (flet ((make (x y)
+                          (let ((res (cons x x)))
+                            (setf (cdr res) y)
+                            (if x res y))))
+                   (declaim (inline make))
+                   (let ((z (make 1 2)))
+                     (declare (dynamic-extent z))
+                     (print z)
+                     t)))))
+
+;;; On x86 and x86-64 upto 1.0.28.16 LENGTH and WORDS argument
+;;; tns to ALLOCATE-VECTOR-ON-STACK could be packed in the same
+;;; location, leading to all manner of badness. ...reproducing this
+;;; reliably is hard, but this it at least used to break on x86-64.
+(defun length-and-words-packed-in-same-tn (m)
+  (declare (optimize speed (safety 0) (debug 0) (space 0)))
+  (let ((array (make-array (max 1 m) :element-type 'fixnum)))
+    (declare (dynamic-extent array))
+    (array-total-size array)))
+(with-test (:name :length-and-words-packed-in-same-tn)
+  (assert (= 1 (length-and-words-packed-in-same-tn -3))))
+
+(with-test (:name :handler-case-bogus-compiler-note)
+  (handler-bind ((compiler-note #'error))
+    ;; Taken from SWANK, used to signal a bogus stack allocation
+    ;; failure note.
+    (compile nil
+             `(lambda (files fasl-dir load)
+                (let ((needs-recompile nil))
+                  (dolist (src files)
+                    (let ((dest (binary-pathname src fasl-dir)))
+                      (handler-case
+                          (progn
+                            (when (or needs-recompile
+                                      (not (probe-file dest))
+                                      (file-newer-p src dest))
+                              (setq needs-recompile t)
+                              (ensure-directories-exist dest)
+                              (compile-file src :output-file dest :print nil :verbose t))
+                            (when load
+                              (load dest :verbose t)))
+                        (serious-condition (c)
+                          (handle-loadtime-error c dest))))))))))
+
+(declaim (inline foovector barvector))
+(defun foovector (x y z)
+  (let ((v (make-array 3)))
+    (setf (aref v 0) x
+          (aref v 1) y
+          (aref v 2) z)
+    v))
+(defun barvector (x y z)
+  (make-array 3 :initial-contents (list x y z)))
+(with-test (:name :dx-compiler-notes)
+  (flet ((assert-notes (j lambda)
+           (let ((n 0))
+             (handler-bind ((compiler-note (lambda (c)
+                                             (declare (ignore cc))
+                                             (incf n))))
+               (compile nil lambda)
+               (unless (= j n)
+                 (error "Wanted ~S notes, got ~S for~%   ~S"
+                        j n lambda))))))
+    ;; These ones should complain.
+    (assert-notes 1 `(lambda (x)
+                       (let ((v (make-array x)))
+                         (declare (dynamic-extent v))
+                         (length v))))
+    (assert-notes 2 `(lambda (x)
+                       (let ((y (if (plusp x)
+                                    (true x)
+                                    (true (- x)))))
+                         (declare (dynamic-extent y))
+                         (print y)
+                         nil)))
+    (assert-notes 1 `(lambda (x)
+                       (let ((y (foovector x x x)))
+                         (declare (sb-int:truly-dynamic-extent y))
+                         (print y)
+                         nil)))
+    ;; These ones should not complain.
+    (assert-notes 0 `(lambda (name)
+                       (with-alien
+                           ((posix-getenv (function c-string c-string)
+                                          :EXTERN "getenv"))
+                         (values
+                          (alien-funcall posix-getenv name)))))
+    (assert-notes 0 `(lambda (x)
+                       (let ((y (barvector x x x)))
+                         (declare (dynamic-extent y))
+                         (print y)
+                         nil)))
+    (assert-notes 0 `(lambda (list)
+                       (declare (optimize (space 0)))
+                       (sort list #'<)))
+    (assert-notes 0 `(lambda (other)
+                       #'(lambda (s c n)
+                           (ignore-errors (funcall other s c n)))))))
+
+;;; Stack allocating a value cell in HANDLER-CASE would blow up stack
+;;; in an unfortunate loop.
+(defun handler-case-eating-stack ()
+  (let ((sp nil))
+    (do ((n 0 (logand most-positive-fixnum (1+ n))))
+        ((>= n 1024))
+     (multiple-value-bind (value error) (ignore-errors)
+       (when (and value error) nil))
+      (if sp
+          (assert (= sp (sb-c::%primitive sb-c:current-stack-pointer)))
+          (setf sp (sb-c::%primitive sb-c:current-stack-pointer))))))
+(with-test (:name :handler-case-eating-stack)
+  (assert-no-consing (handler-case-eating-stack)))