+(macrolet
+ ((frob (string)
+ `(assert (eq (readable-struct-a (read-from-string ,string)) t))))
+ (frob "#S(READABLE-STRUCT :A T)")
+ (frob "#S(READABLE-STRUCT A T)")
+ (frob "#S(READABLE-STRUCT \"A\" T)")
+ (frob "#S(READABLE-STRUCT #\\A T)")
+ (frob "#S(READABLE-STRUCT #\\A T :A NIL)"))
+(macrolet
+ ((frob (string)
+ `(assert (raises-error? (read-from-string ,string) reader-error))))
+ (frob "#S(READABLE-STRUCT . :A)")
+ (frob "#S(READABLE-STRUCT :A . T)")
+ (frob "#S(READABLE-STRUCT :A T . :A)")
+ (frob "#S(READABLE-STRUCT :A T :A . T)"))
+
+;;; reported by Henrik Motakef
+(defpackage "")
+(assert (eq (symbol-package (read-from-string "||::FOO"))
+ (find-package "")))
+
+;;; test nested reads, test case by Helmut Eller for cmucl
+(defclass my-in-stream (sb-gray:fundamental-character-input-stream)
+ ((last-char :initarg :last-char)))
+
+(let ((string " a ")
+ (i 0))
+ (defmethod sb-gray:stream-read-char ((s my-in-stream))
+ (with-input-from-string (s "b") (read s))
+ (with-slots (last-char) s
+ (cond (last-char (prog1 last-char (setf last-char nil)))
+ (t (prog1 (aref string i)
+ (setq i (mod (1+ i) (length string)))))))))
+
+(defmethod sb-gray:stream-unread-char ((s my-in-stream) char)
+ (setf (slot-value s 'last-char) char)
+ nil)
+
+(assert (eq 'a (read (make-instance 'my-in-stream :last-char nil))))
+
+;;; NIL as the last argument to SET-SYNTAX-FROM-CHAR in compiled code,
+;;; reported by Levente Mészáros
+(let ((fun (compile nil '(lambda ()
+ (set-syntax-from-char #\{ #\( *readtable* nil)))))
+ (funcall fun)
+ (assert (equal '(:ok) (read-from-string "{:ok)"))))