re PR c++/26036 (Treating a class object as a function with member variables causes hang)

	PR c++/26036
	* typeck.c (convert_arguments): Return error_mark_node instead of
	error_mark_list.
	* cp-tree.h (error_mark_list): Remove declaration.
	* decl.c (error_mark_list): Remove definition.
	(cxx_init_decl_processing): Do not initialize error_mark_list.

	* g++.dg/expr/call3.C: New test.

From-SVN: r113087

gcc/cp/ChangeLog

 2006-04-19  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/26036
+	* typeck.c (convert_arguments): Return error_mark_node instead of
+	error_mark_list.
+	* cp-tree.h (error_mark_list): Remove declaration.
+	* decl.c (error_mark_list): Remove definition.
+	(cxx_init_decl_processing): Do not initialize error_mark_list.
+
 	PR c++/10385
 	* rtti.c (build_dynamic_cast_1): Check for invalid conversions
 	before calling convert_to_reference.

gcc/cp/cp-tree.h

@@ -3184,10 +3184,6 @@ typedef enum base_kind {
 			     binfo.  */
 } base_kind;
 
-/* in decl{2}.c */
-/* A node that is a list (length 1) of error_mark_nodes.  */
-extern GTY(()) tree error_mark_list;
-
 /* Node for "pointer to (virtual) function".
    This may be distinct from ptr_type_node so gdb can distinguish them.  */
 #define vfunc_ptr_type_node  vtable_entry_type

gcc/cp/decl.c

@@ -106,9 +106,6 @@ static void initialize_local_var (tree, tree);
 static void expand_static_init (tree, tree);
 static tree next_initializable_field (tree);
 
-/* Erroneous argument lists can use this *IFF* they do not modify it.  */
-tree error_mark_list;
-
 /* The following symbols are subsumed in the cp_global_trees array, and
    listed here individually for documentation purposes.
 
@@ -3118,9 +3115,6 @@ cxx_init_decl_processing (void)
   /* Initially, C.  */
   current_lang_name = lang_name_c;
 
-  error_mark_list = build_tree_list (error_mark_node, error_mark_node);
-  TREE_TYPE (error_mark_list) = error_mark_node;
-
   /* Create the `std' namespace.  */
   push_namespace (std_identifier);
   std_node = current_namespace;

gcc/cp/typeck.c

@@ -2787,7 +2787,7 @@ convert_arguments (tree typelist, tree values, tree fndecl, int flags)
 	    }
 	  else
 	    error ("too few arguments to function");
-	  return error_mark_list;
+	  return error_mark_node;
 	}
     }
 

gcc/testsuite/ChangeLog

 2006-04-19  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
+	PR c++/26036
+	* g++.dg/expr/call3.C: New test.
+
 	PR c++/10385
 	* g++.dg/conversion/dynamic1.C: New test.
 

gcc/testsuite/g++.dg/expr/call3.C

+// PR c++/26036
+// Origin: <ben@pc-doctor.com>
+// { dg-do compile }
+
+struct A
+{
+  int i;
+};
+
+A foo(int);       // { dg-error "too few arguments" }
+
+int j = foo().i;  // { dg-error "at this point" }