+;; enums used to allow values to be used only once
+;; C enums allow for multiple tags to point to the same value
+(define-alien-type enum.4
+ (enum nil (:key1 1) (:key2 2) (:keytwo 2)))
+(with-alien ((enum-array (array enum.4 3)))
+ (setf (deref enum-array 0) :key1)
+ (setf (deref enum-array 1) :key2)
+ (setf (deref enum-array 2) :keytwo)
+ (assert (and (eql (deref enum-array 1) (deref enum-array 2))
+ (eql (deref enum-array 1) :key2))))
+
+;;; As reported by Baughn on #lisp, ALIEN-FUNCALL loops forever when
+;;; compiled with (DEBUG 3).
+(sb-kernel::values-specifier-type-cache-clear)
+(proclaim '(optimize (debug 3)))
+(let ((f (compile nil '(lambda (v)
+ (sb-alien:alien-funcall (sb-alien:extern-alien "getenv"
+ (function (c-string) c-string))
+ v)))))
+ (assert (typep (funcall f "HOME") '(or string null))))
+
+
+;;; CLH: Test for non-standard alignment in alien structs
+;;;
+(sb-alien:define-alien-type align-test-struct
+ (sb-alien:union align-test-union
+ (s (sb-alien:struct nil
+ (s1 sb-alien:unsigned-char)
+ (c1 sb-alien:unsigned-char :alignment 16)
+ (c2 sb-alien:unsigned-char :alignment 32)
+ (c3 sb-alien:unsigned-char :alignment 32)
+ (c4 sb-alien:unsigned-char :alignment 8)))
+ (u (sb-alien:array sb-alien:unsigned-char 16))))
+
+(let ((a1 (sb-alien:make-alien align-test-struct)))
+ (declare (type (sb-alien:alien (* align-test-struct)) a1))
+ (setf (sb-alien:slot (sb-alien:slot a1 's) 's1) 1)
+ (setf (sb-alien:slot (sb-alien:slot a1 's) 'c1) 21)
+ (setf (sb-alien:slot (sb-alien:slot a1 's) 'c2) 41)
+ (setf (sb-alien:slot (sb-alien:slot a1 's) 'c3) 61)
+ (setf (sb-alien:slot (sb-alien:slot a1 's) 'c4) 81)
+ (assert (equal '(1 21 41 61 81)
+ (list (sb-alien:deref (sb-alien:slot a1 'u) 0)
+ (sb-alien:deref (sb-alien:slot a1 'u) 2)
+ (sb-alien:deref (sb-alien:slot a1 'u) 4)
+ (sb-alien:deref (sb-alien:slot a1 'u) 8)
+ (sb-alien:deref (sb-alien:slot a1 'u) 9)))))
+
+(handler-bind ((compiler-note (lambda (c)
+ (error "bad note! ~A" c))))
+ (funcall (compile nil '(lambda () (sb-alien:make-alien sb-alien:int)))))
+