decl.c (start_decl): An explicit specialization of a static data member is only a definition if...

	* decl.c (start_decl): An explicit specialization of a static data
	member is only a definition if it has an initializer.

From-SVN: r23847

gcc/cp/ChangeLog

 1998-11-24  Jason Merrill  <jason@yorick.cygnus.com>
 
+	* decl.c (start_decl): An explicit specialization of a static data
+	member is only a definition if it has an initializer.
+
 	* except.c (expand_throw): Use cp_finish_decl for the throw temp.
 	* cvt.c (build_up_reference): Pass DIRECT_BIND down into
 	cp_finish_decl.

gcc/cp/decl.c

@@ -6770,7 +6770,17 @@ start_decl (declarator, declspecs, initialized, attributes, prefix_attributes)
       DECL_IN_AGGR_P (decl) = 0;
       if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl)) 
 	  || CLASSTYPE_USE_TEMPLATE (context))
-	SET_DECL_TEMPLATE_SPECIALIZATION (decl);
+	{
+	  SET_DECL_TEMPLATE_SPECIALIZATION (decl);
+	  /* [temp.expl.spec] An explicit specialization of a static data
+	     member of a template is a definition if the declaration
+	     includes an initializer; otherwise, it is a declaration.
+
+	     We check for processing_specialization so this only applies
+	     to the new specialization syntax.  */
+	  if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization)
+	    DECL_EXTERNAL (decl) = 1;
+	}
 
       if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl))
 	cp_pedwarn ("declaration of `%#D' outside of class is not definition",