X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Fprint.lisp;h=fd90bd2044b04b1e7358ac52c0f32c3561023a0a;hb=f2218c68ed978533fc46830ac81f4517fefe5a2a;hp=4676332e4926834faa0a04c4bbb000496fa865a7;hpb=425ce8cf75122dfb7242ffbf5d726e12fae24e58;p=sbcl.git

diff --git a/src/code/print.lisp b/src/code/print.lisp
index 4676332..fd90bd2 100644
--- 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)