X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Finfo-functions.lisp;h=5188227ce8c2421834ccc5f37db2da0752740def;hb=15d6e7c9a2c3234f95dfe278046fa2fee1b0c007;hp=b4f3c2e17386581f59c901266ec0e76949e11be0;hpb=e511ed14d4a20cb9de2523f052b0f23a1dde1115;p=sbcl.git

diff --git a/src/compiler/info-functions.lisp b/src/compiler/info-functions.lisp
index b4f3c2e..5188227 100644
--- a/src/compiler/info-functions.lisp
+++ b/src/compiler/info-functions.lisp
@@ -145,7 +145,6 @@
      (second form))
     (t form)))
 
-(declaim (ftype (function (symbol &optional (or null sb!c::lexenv))) sb!xc:macro-function))
 (defun sb!xc:macro-function (symbol &optional env)
   #!+sb-doc
   "If SYMBOL names a macro in ENV, returns the expansion function,
@@ -210,8 +209,10 @@
     (error "can't SETF COMPILER-MACRO-FUNCTION when ENV is non-NIL"))
   (when (eq (info :function :kind name) :special-form)
     (error "~S names a special form." name))
-  (setf (info :function :compiler-macro-function name) function)
-  function)
+  (with-single-package-locked-error 
+      (:symbol name "setting the compiler-macro-function of ~A")
+    (setf (info :function :compiler-macro-function name) function)
+    function))
 
 ;;;; a subset of DOCUMENTATION functionality for bootstrapping