4 files changed, 9 insertions, 9 deletions
diff --git a/Modules/_sqlite/cache.c b/Modules/_sqlite/cache.c
index 62c5893..72b1f2c 100644
--- a/Modules/_sqlite/cache.c
+++ b/Modules/_sqlite/cache.c
@@ -162,7 +162,7 @@ PyObject* pysqlite_cache_get(pysqlite_Cache* self, PyObject* args)
          * entry in the cache, and make space if necessary by throwing the
          * least used item out of the cache. */
 
-        if (PyDict_Size(self->mapping) == self->size) {
+        if (PyDict_GET_SIZE(self->mapping) == self->size) {
             if (self->last) {
                 node = self->last;
 
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 1c6aa54..7bbc15c 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -645,7 +645,7 @@ static void _pysqlite_step_callback(sqlite3_context *context, int argc, sqlite3_
     aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
 
     if (*aggregate_instance == 0) {
-        *aggregate_instance = PyObject_CallFunction(aggregate_class, NULL);
+        *aggregate_instance = _PyObject_CallNoArg(aggregate_class);
 
         if (PyErr_Occurred()) {
             *aggregate_instance = 0;
@@ -933,7 +933,7 @@ static int _progress_handler(void* user_arg)
 
     gilstate = PyGILState_Ensure();
 #endif
-    ret = PyObject_CallFunction((PyObject*)user_arg, NULL);
+    ret = _PyObject_CallNoArg((PyObject*)user_arg);
 
     if (!ret) {
         if (_enable_callback_tracebacks) {
@@ -1489,7 +1489,7 @@ pysqlite_connection_create_collation(pysqlite_Connection* self, PyObject* args)
     PyObject* retval;
     Py_ssize_t i, len;
     _Py_IDENTIFIER(upper);
-    char *uppercase_name_str;
+    const char *uppercase_name_str;
     int rc;
     unsigned int kind;
     void *data;
diff --git a/Modules/_sqlite/row.c b/Modules/_sqlite/row.c
index 53342f3..c6c3e98 100644
--- a/Modules/_sqlite/row.c
+++ b/Modules/_sqlite/row.c
@@ -79,12 +79,12 @@ PyObject* pysqlite_row_item(pysqlite_Row* self, Py_ssize_t idx)
 PyObject* pysqlite_row_subscript(pysqlite_Row* self, PyObject* idx)
 {
     Py_ssize_t _idx;
-    char* key;
+    const char *key;
     Py_ssize_t nitems, i;
-    char* compare_key;
+    const char *compare_key;
 
-    char* p1;
-    char* p2;
+    const char *p1;
+    const char *p2;
 
     PyObject* item;
 
diff --git a/Modules/_sqlite/statement.c b/Modules/_sqlite/statement.c
index 0df661b..8b45a03 100644
--- a/Modules/_sqlite/statement.c
+++ b/Modules/_sqlite/statement.c
@@ -112,7 +112,7 @@ int pysqlite_statement_create(pysqlite_Statement* self, pysqlite_Connection* con
 int pysqlite_statement_bind_parameter(pysqlite_Statement* self, int pos, PyObject* parameter)
 {
     int rc = SQLITE_OK;
-    char* string;
+    const char *string;
     Py_ssize_t buflen;
     parameter_type paramtype;