decl.c (saved_scope_p): New fn.

	* decl.c (saved_scope_p): New fn.
	* class.c (pushclass): Don't clear class_cache_obstack if we have
	saved scopes.

From-SVN: r29468

gcc/cp/ChangeLog

+1999-09-16  Jason Merrill  <jason@yorick.cygnus.com>
+
+	* decl.c (saved_scope_p): New fn.
+	* class.c (pushclass): Don't clear class_cache_obstack if we have
+	saved scopes.
+
 1999-09-16  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* lex.c (init_cpp_parse): Call xcalloc, not malloc/bzero.

gcc/cp/class.c

@@ -4499,12 +4499,17 @@ pushclass (type, modify)
       /* Forcibly remove any old class remnants.  */
       invalidate_class_lookup_cache ();
 
-      /* Now, free the obstack on which we cached all the values.  */
+      /* Now, free the obstack on which we cached all the values.
+         We can't do this if we have saved scopes sitting around, since
+	 they may have saved previous_class_values.  */
+      if (! saved_scope_p ())
+	{
 	  if (class_cache_firstobj)
 	    obstack_free (&class_cache_obstack, class_cache_firstobj);
 	  class_cache_firstobj 
 	    = (char*) obstack_finish (&class_cache_obstack);
 	}
+    }
 
   /* If we're about to enter a nested class, clear
      IDENTIFIER_CLASS_VALUE for the enclosing classes.  */

gcc/cp/decl.c

@@ -2482,6 +2482,12 @@ pop_from_top_level ()
   free (s);
 }
 
+int
+saved_scope_p ()
+{
+  return current_saved_scope != NULL;
+}
+
 /* Push a definition of struct, union or enum tag "name".
    into binding_level "b".   "type" should be the type node, 
    We assume that the tag "name" is not already defined.