re PR c++/41503 (function_parameter_expanded_from_pack_p segfaults when passed a…

re PR c++/41503 (function_parameter_expanded_from_pack_p segfaults when passed a PARM_DECL created by IPA-SRA)

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.

From-SVN: r152365

gcc/ChangeLog

+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.

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));