re PR c++/22452 (ICE expected tree that contains 'decl with visibility'…

re PR c++/22452 (ICE expected tree that contains 'decl with visibility' structure, have 'const_decl'  in decl_linkage, at cp/tree.c:2132)

2005-07-14  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR c++/22452
	* tree.c (decl_linkage): Don't check DECL_COMDAT on CONST_DECL.

From-SVN: r102063

gcc/cp/ChangeLog

+2005-07-14  Daniel Berlin  <dberlin@dberlin.org>
+
+	Fix PR c++/22452
+	* tree.c (decl_linkage): Don't check DECL_COMDAT on CONST_DECL.
+
 2005-07-15  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/22132

gcc/cp/tree.c

@@ -2124,6 +2124,11 @@ decl_linkage (tree decl)
   if (TREE_PUBLIC (decl))
     return lk_external;
   
+  /* Linkage of a CONST_DECL depends on the linkage of the enumeration 
+     type.  */
+  if (TREE_CODE (decl) == CONST_DECL)
+    return decl_linkage (TYPE_NAME (TREE_TYPE (decl)));
+
   /* Some things that are not TREE_PUBLIC have external linkage, too.
      For example, on targets that don't have weak symbols, we make all
      template instantiations have internal linkage (in the object