X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fctype.lisp;h=3fb91d173db646da3fa5b97bda7d2cbc308f203e;hb=94ac5b7c3ff37850210b6fc9a7593cf1c5752993;hp=35538cac6ad1571b7364dc78cd2a98a233b0eb80;hpb=d40a76606c86722b0aef8179155f9f2840739b72;p=sbcl.git

diff --git a/src/compiler/ctype.lisp b/src/compiler/ctype.lisp
index 35538ca..3fb91d1 100644
--- a/src/compiler/ctype.lisp
+++ b/src/compiler/ctype.lisp
@@ -102,12 +102,12 @@
 ;;; explain the result. We bind *COMPILER-ERROR-CONTEXT* to the
 ;;; combination node so that COMPILER-WARNING and related functions
 ;;; will do the right thing if they are supplied.
-(defun valid-function-use (call type &key
-				((:argument-test *ctype-test-fun*) #'csubtypep)
-				(result-test #'values-subtypep)
-				(strict-result nil)
-				((:lossage-fun *lossage-fun*))
-				((:unwinnage-fun *unwinnage-fun*)))
+(defun valid-fun-use (call type &key
+			   ((:argument-test *ctype-test-fun*) #'csubtypep)
+			   (result-test #'values-subtypep)
+			   (strict-result nil)
+			   ((:lossage-fun *lossage-fun*))
+			   ((:unwinnage-fun *unwinnage-fun*)))
   (declare (type function result-test) (type combination call)
 	   (type fun-type type))
   (let* ((*lossage-detected* nil)
@@ -759,3 +759,13 @@
 		   (dolist (ref (leaf-refs var))
 		     (derive-node-type ref type)))))
 	  t))))))
+
+(defun check-catch-tag-type (tag)
+  (declare (type continuation tag))
+  (let ((ctype (continuation-type tag)))
+    (when (csubtypep ctype (specifier-type '(or number character)))
+      (compiler-style-warn "~@<using ~S of type ~S as a catch tag (which ~
+                            tends to be unportable because THROW and CATCH ~
+                            use EQ comparison)~@:>"
+			   (continuation-source tag)
+			   (type-specifier (continuation-type tag))))))