diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index da000d0..37633d2 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -958,7 +958,7 @@
 {
 	dequeiterobject *it;
 
-	it = PyObject_New(dequeiterobject, &dequeiter_type);
+	it = PyObject_GC_New(dequeiterobject, &dequeiter_type);
 	if (it == NULL)
 		return NULL;
 	it->b = deque->leftblock;
@@ -967,14 +967,22 @@
 	it->deque = deque;
 	it->state = deque->state;
 	it->counter = deque->len;
+	_PyObject_GC_TRACK(it);
 	return (PyObject *)it;
 }
 
+static int
+dequeiter_traverse(dequeiterobject *dio, visitproc visit, void *arg)
+{
+	Py_VISIT(dio->deque);
+	return 0;
+}
+
 static void
 dequeiter_dealloc(dequeiterobject *dio)
 {
 	Py_XDECREF(dio->deque);
-	Py_TYPE(dio)->tp_free(dio);
+	PyObject_GC_Del(dio);
 }
 
 static PyObject *
@@ -1039,9 +1047,9 @@
 	PyObject_GenericGetAttr,		/* tp_getattro */
 	0,					/* tp_setattro */
 	0,					/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT,			/* tp_flags */
+	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
 	0,					/* tp_doc */
-	0,					/* tp_traverse */
+	(traverseproc)dequeiter_traverse,	/* tp_traverse */
 	0,					/* tp_clear */
 	0,					/* tp_richcompare */
 	0,					/* tp_weaklistoffset */
@@ -1060,7 +1068,7 @@
 {
 	dequeiterobject *it;
 
-	it = PyObject_New(dequeiterobject, &dequereviter_type);
+	it = PyObject_GC_New(dequeiterobject, &dequereviter_type);
 	if (it == NULL)
 		return NULL;
 	it->b = deque->rightblock;
@@ -1069,6 +1077,7 @@
 	it->deque = deque;
 	it->state = deque->state;
 	it->counter = deque->len;
+	_PyObject_GC_TRACK(it);
 	return (PyObject *)it;
 }
 
@@ -1121,9 +1130,9 @@
 	PyObject_GenericGetAttr,		/* tp_getattro */
 	0,					/* tp_setattro */
 	0,					/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT,			/* tp_flags */
+	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
 	0,					/* tp_doc */
-	0,					/* tp_traverse */
+	(traverseproc)dequeiter_traverse,	/* tp_traverse */
 	0,					/* tp_clear */
 	0,					/* tp_richcompare */
 	0,					/* tp_weaklistoffset */
diff --git a/Modules/_fileio.c b/Modules/_fileio.c
index 65cc99d..ca12822 100644
--- a/Modules/_fileio.c
+++ b/Modules/_fileio.c
@@ -98,7 +98,7 @@
    directories, so we need a check.  */
 
 static int
-dircheck(PyFileIOObject* self)
+dircheck(PyFileIOObject* self, char *name)
 {
 #if defined(HAVE_FSTAT) && defined(S_IFDIR) && defined(EISDIR)
 	struct stat buf;
@@ -109,8 +109,8 @@
 		PyObject *exc;
 		internal_close(self);
 
-		exc = PyObject_CallFunction(PyExc_IOError, "(is)",
-					    EISDIR, msg);
+		exc = PyObject_CallFunction(PyExc_IOError, "(iss)",
+					    EISDIR, msg, name);
 		PyErr_SetObject(PyExc_IOError, exc);
 		Py_XDECREF(exc);
 		return -1;
@@ -271,7 +271,7 @@
 #endif
 			goto error;
 		}
-		if(dircheck(self) < 0)
+		if(dircheck(self, name) < 0)
 			goto error;
 	}
 
diff --git a/Modules/_struct.c b/Modules/_struct.c
index 30feaa6..b8f1525 100644
--- a/Modules/_struct.c
+++ b/Modules/_struct.c
@@ -663,7 +663,7 @@
 		return -1;
 #if (SIZEOF_LONG > SIZEOF_INT)
 	if ((x < ((long)INT_MIN)) || (x > ((long)INT_MAX)))
-		return _range_error(f, 0);
+		RANGE_ERROR(x, f, 0, -1);
 #endif
 	y = (int)x;
 	memcpy(p, (char *)&y, sizeof y);
@@ -675,12 +675,12 @@
 {
 	unsigned long x;
 	unsigned int y;
-	if (get_ulong(v, &x) < 0)
-		return _range_error(f, 1);
+	if (get_wrapped_ulong(v, &x) < 0)
+		return -1;
 	y = (unsigned int)x;
 #if (SIZEOF_LONG > SIZEOF_INT)
 	if (x > ((unsigned long)UINT_MAX))
-		return _range_error(f, 1);
+		RANGE_ERROR(y, f, 1, -1);
 #endif
 	memcpy(p, (char *)&y, sizeof y);
 	return 0;
@@ -700,8 +700,8 @@
 np_ulong(char *p, PyObject *v, const formatdef *f)
 {
 	unsigned long x;
-	if (get_ulong(v, &x) < 0)
-		return _range_error(f, 1);
+	if (get_wrapped_ulong(v, &x) < 0)
+		return -1;
 	memcpy(p, (char *)&x, sizeof x);
 	return 0;
 }