decl.c (decls_match): Return 1 if old and new are identical.

1999-01-25  Martin von Loewis  <loewis@informatik.hu-berlin.de>
	* decl.c (decls_match): Return 1 if old and new are identical.
	(push_overloaded_decl): Set OVL_USED when PUSH_USING.

From-SVN: r24849

gcc/cp/ChangeLog

+1999-01-25  Martin von Loewis  <loewis@informatik.hu-berlin.de>
+
+	* decl.c (decls_match): Return 1 if old and new are identical.
+	(push_overloaded_decl): Set OVL_USED when PUSH_USING.
+
 1999-01-24  Jason Merrill  <jason@yorick.cygnus.com>
 
 	* decl.c (start_function): Make member functions one_only on windows.

gcc/cp/decl.c

@@ -2696,6 +2696,9 @@ decls_match (newdecl, olddecl)
 {
   int types_match;
 
+  if (newdecl == olddecl)
+    return 1;
+
   if (TREE_CODE (newdecl) != TREE_CODE (olddecl))
     /* If the two DECLs are not even the same kind of thing, we're not
        interested in their types.  */
@@ -4239,6 +4242,8 @@ push_overloaded_decl (decl, flags)
 	new_binding = ovl_cons (decl, ovl_cons (old, NULL_TREE));
       else
 	new_binding = ovl_cons (decl, old);
+      if (flags & PUSH_USING)
+	OVL_USED (new_binding) = 1;
     }
   else
     /* NAME is not ambiguous.  */