src/c-types-proto.lisp: Make `argument' objects be immutable.

We have no need to change them.

diff --git a/src/c-types-proto.lisp b/src/c-types-proto.lisp
index 7134962..2193ec1 100644 (file)
--- a/src/c-types-proto.lisp
+++ b/src/c-types-proto.lisp
@@ -243,9 +243,9 @@
                                                  &aux (%type type)))
                     (:predicate argumentp))
   "Simple structure representing a function argument."
-  name
-  %type)
-(define-access-wrapper argument-type argument-%type)
+  (name nil :type t :read-only t)
+  (%type nil :type c-type :read-only t))
+(define-access-wrapper argument-type argument-%type :read-only t)
 
 (export 'commentify-argument-name)
 (defgeneric commentify-argument-name (name)