diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e80433ae8b8..78f6a6ea9ab 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-01  Martin Jambor  <mjambor@suse.cz>
+
+	PR c++/41503
+	* cp/pt.c (function_parameter_expanded_from_pack_p): Return false if
+	DECL_ARTIFICIAL (param_decl) is true.
+	
 2009-09-30  Gabriel Dos Reis  <gdr@cs.tamu.edu>
 
 	* tree.h (tree_decl_common::lang_flag_8): New.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index d078642226b..5f9b07cde73 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -2669,7 +2669,8 @@ get_function_template_decl (const_tree primary_func_tmpl_inst)
 bool
 function_parameter_expanded_from_pack_p (tree param_decl, tree pack)
 {
-    if (! function_parameter_pack_p (pack))
+    if (DECL_ARTIFICIAL (param_decl)
+	|| !function_parameter_pack_p (pack))
       return false;
 
     gcc_assert (DECL_NAME (param_decl) && DECL_NAME (pack));