X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-package.lisp;h=2e4d9ebaea6dec531f021f0ac2146c7b88dad164;hb=5bf4a6a677c80a71dfa31b5c9c374f986594392f;hp=a8a8ea7254d111cb4dda18c4344e62cd87741fac;hpb=82653abf5573c22c691e2243b70647ecdaa6aea8;p=sbcl.git

diff --git a/src/code/target-package.lisp b/src/code/target-package.lisp
index a8a8ea7..2e4d9eb 100644
--- a/src/code/target-package.lisp
+++ b/src/code/target-package.lisp
@@ -355,7 +355,10 @@
 	 (name (string name))
 	 (found (find-package name)))
     (unless (or (not found) (eq found package))
-      (error "A package named ~S already exists." name))
+      (error 'simple-package-error
+	     :package name
+	     :format-control "A package named ~S already exists."
+	     :format-arguments (list name)))
     (remhash (package-%name package) *package-names*)
     (dolist (n (package-%nicknames package))
       (remhash n *package-names*))