1.0.43.45: More type-directed constant folding

[sbcl.git] / src / code / print.lisp

diff --git a/src/code/print.lisp b/src/code/print.lisp
index 4676332..fd90bd2 100644 (file)
--- a/src/code/print.lisp
+++ b/src/code/print.lisp
@@ -193,9 +193,11 @@
         (push (list variable value) bind)))
     (unless (assoc 'stream bind)
       (push (list 'stream '*standard-output*) bind))
-    `(let ,(nreverse bind)
-       ,@(when ignore `((declare (ignore ,@ignore))))
-       (output-object ,object stream))))
+    (once-only ((object object))
+      `(let ,(nreverse bind)
+         ,@(when ignore `((declare (ignore ,@ignore))))
+         (output-object ,object (out-synonym-of stream))
+         ,object))))
 
 (defun prin1 (object &optional stream)
   #!+sb-doc
@@ -275,9 +277,10 @@
           (push variable ignore))
         (push (list variable value) bind)))
     (if bind
-        `(let ,(nreverse bind)
-           ,@(when ignore `((declare (ignore ,@ignore))))
-           (stringify-object ,object))
+        (once-only ((object object))
+          `(let ,(nreverse bind)
+             ,@(when ignore `((declare (ignore ,@ignore))))
+             (stringify-object ,object)))
         `(stringify-object ,object))))
 
 (defun prin1-to-string (object)