Index: Modules/_sqlite/connection.c
===================================================================
--- Modules/_sqlite/connection.c	(révision 64771)
+++ Modules/_sqlite/connection.c	(copie de travail)
@@ -940,6 +940,7 @@
 {
     PyObject* res;
     PyObject* begin_statement;
+    char* begin_statement_str;
 
     Py_XDECREF(self->isolation_level);
 
@@ -972,12 +973,16 @@
             return -1;
         }
 
-        self->begin_statement = PyMem_Malloc(PyString_Size(begin_statement) + 2);
+        begin_statement_str = PyString_AsString(begin_statement);
+        if (!begin_statement_str) {
+            return -1;
+        }
+        self->begin_statement = PyMem_Malloc(strlen(begin_statement_str) + 2);
         if (!self->begin_statement) {
             return -1;
         }
 
-        strcpy(self->begin_statement, PyString_AsString(begin_statement));
+        strcpy(self->begin_statement, begin_statement_str);
         Py_DECREF(begin_statement);
     }
 
Index: Modules/_sqlite/module.c
===================================================================
--- Modules/_sqlite/module.c	(révision 64771)
+++ Modules/_sqlite/module.c	(copie de travail)
@@ -147,6 +147,7 @@
 {
     PyTypeObject* type;
     PyObject* caster;
+    int rc;
 
     if (!PyArg_ParseTuple(args, "OO", &type, &caster)) {
         return NULL;
@@ -159,7 +160,9 @@
         pysqlite_BaseTypeAdapted = 1;
     }
 
-    microprotocols_add(type, (PyObject*)&pysqlite_PrepareProtocolType, caster);
+    rc = microprotocols_add(type, (PyObject*)&pysqlite_PrepareProtocolType, caster);
+    if (rc == -1)
+        return NULL;
 
     Py_INCREF(Py_None);
     return Py_None;