+;;; read-sequence misreported the amount read and lost position
+(let ((string (make-array (* 3 sb-impl::+ansi-stream-in-buffer-length+)
+ :element-type 'character)))
+ (dotimes (i (length string))
+ (setf (char string i) (code-char (mod i char-code-limit))))
+ (with-open-file (f "read-sequence-character-test-data.tmp"
+ :if-exists :supersede
+ :direction :output
+ :external-format :utf-8)
+ (write-sequence string f))
+ (let ((copy
+ (with-open-file (f "read-sequence-character-test-data.tmp"
+ :if-does-not-exist :error
+ :direction :input
+ :external-format :utf-8)
+ (let ((buffer (make-array 128 :element-type 'character))
+ (total 0))
+ (with-output-to-string (datum)
+ (loop for n-read = (read-sequence buffer f)
+ do (write-sequence buffer datum :start 0 :end n-read)
+ (assert (<= (incf total n-read) (length string)))
+ while (and (= n-read 128))))))))
+ (assert (equal copy string)))
+ (delete-file "read-sequence-character-test-data.tmp"))
+
+;;; ANSI-STREAM-OUTPUT-STREAM-P used to assume that a SYNONYM-STREAM's
+;;; target was an ANSI stream, but it could be a user-defined stream,
+;;; e.g., a SLIME stream.
+(defclass user-output-stream (fundamental-output-stream)
+ ())
+
+(let ((*stream* (make-instance 'user-output-stream)))
+ (declare (special *stream*))
+ (with-open-stream (stream (make-synonym-stream '*stream*))
+ (assert (output-stream-p stream))))
+
+(defclass user-input-stream (fundamental-input-stream)
+ ())
+
+(let ((*stream* (make-instance 'user-input-stream)))
+ (declare (special *stream*))
+ (with-open-stream (stream (make-synonym-stream '*stream*))
+ (assert (input-stream-p stream))))
+
+