0.8.14.5: Join the foreign legion!

[sbcl.git] / tests / compiler.pure.lisp

diff --git a/tests/compiler.pure.lisp b/tests/compiler.pure.lisp
index 0799a59..cadd0b0 100644 (file)
--- a/tests/compiler.pure.lisp
+++ b/tests/compiler.pure.lisp
@@ -1431,3 +1431,12 @@
                   (declare (type (integer 3 6) y)
                            (type (integer -6 -3) x))
                   (+ (logxor x y) most-positive-fixnum)))))
+
+;;; check that modular ash gives the right answer, to protect against
+;;; possible misunderstandings about the hardware shift instruction.
+(assert (zerop (funcall
+               (compile nil '(lambda (x y)
+                              (declare (optimize speed)
+                                       (type (unsigned-byte 32) x y))
+                              (logand #xffffffff (ash x y))))
+               1 257)))