diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index b9cac399c91..bcb179ee82e 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -904,7 +904,7 @@ ArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 	PyObject *typedict;
 	int length;
 
-	int itemsize, itemalign, itemlen;
+	int itemsize, itemalign;
 
 	typedict = PyTuple_GetItem(args, 2);
 	if (!typedict)
@@ -941,7 +941,6 @@ ArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 
 	itemsize = itemdict->size;
 	itemalign = itemdict->align;
-	itemlen = itemdict->length;
 
 	stgdict->size = itemsize * length;
 	stgdict->align = itemalign;
diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 60c71d7886b..b1461bdc019 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -404,7 +404,7 @@ test_k_code(PyObject *self)
 
         PyTuple_SET_ITEM(tuple, 0, num);
 
-        value = -1;
+        value = 0;
         if (PyArg_ParseTuple(tuple, "k:test_k_code", &value) < 0)
         	return NULL;
         if (value != ULONG_MAX)
@@ -423,7 +423,7 @@ test_k_code(PyObject *self)
 
         PyTuple_SET_ITEM(tuple, 0, num);
 
-	value = -1;
+	value = 0;
         if (PyArg_ParseTuple(tuple, "k:test_k_code", &value) < 0)
         	return NULL;
         if (value != (unsigned long)-0x42)
diff --git a/Modules/cPickle.c b/Modules/cPickle.c
index 727dcc946d7..69e15e2eb69 100644
--- a/Modules/cPickle.c
+++ b/Modules/cPickle.c
@@ -123,7 +123,7 @@ static PyObject *__class___str, *__getinitargs___str, *__dict___str,
   *__getstate___str, *__setstate___str, *__name___str, *__reduce___str,
   *__reduce_ex___str,
   *write_str, *append_str,
-  *read_str, *readline_str, *__main___str, *__basicnew___str,
+  *read_str, *readline_str, *__main___str, 
   *copy_reg_str, *dispatch_table_str;
 
 /*************************************************************************
@@ -5602,7 +5602,6 @@ init_stuff(PyObject *module_dict)
 	INIT_STR(readline);
 	INIT_STR(copy_reg);
 	INIT_STR(dispatch_table);
-	INIT_STR(__basicnew__);
 
 	if (!( copy_reg = PyImport_ImportModule("copy_reg")))
 		return -1;
diff --git a/Python/compile.c b/Python/compile.c
index 3f732557291..ae4c8503f00 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -4089,7 +4089,7 @@ assemble_lnotab(struct assembler *a, struct instr *i)
 {
 	int d_bytecode, d_lineno;
 	int len;
-	char *lnotab;
+	unsigned char *lnotab;
 
 	d_bytecode = a->a_offset - a->a_lineno_off;
 	d_lineno = i->i_lineno - a->a_lineno;
@@ -4112,7 +4112,8 @@ assemble_lnotab(struct assembler *a, struct instr *i)
 			if (_PyString_Resize(&a->a_lnotab, len) < 0)
 				return 0;
 		}
-		lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+		lnotab = (unsigned char *)
+			   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
 		for (j = 0; j < ncodes; j++) {
 			*lnotab++ = 255;
 			*lnotab++ = 0;
@@ -4133,7 +4134,8 @@ assemble_lnotab(struct assembler *a, struct instr *i)
 			if (_PyString_Resize(&a->a_lnotab, len) < 0)
 				return 0;
 		}
-		lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+		lnotab = (unsigned char *)
+			   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
 		*lnotab++ = 255;
 		*lnotab++ = d_bytecode;
 		d_bytecode = 0;
@@ -4150,7 +4152,8 @@ assemble_lnotab(struct assembler *a, struct instr *i)
 		if (_PyString_Resize(&a->a_lnotab, len * 2) < 0)
 			return 0;
 	}
-	lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+	lnotab = (unsigned char *)
+			PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
 
 	a->a_lnotab_off += 2;
 	if (d_bytecode) {