SQLite Modules cannot be destroyed.

src/vtab/int_array.rs

@@ -25,8 +25,14 @@ pub fn create_int_array(conn: &Connection, name: &str) -> Result<Rc<RefCell<Vec<
 /// Destroy the intarray object by dropping the virtual table.
 /// If not done explicitly by the application, the virtual table will be dropped implicitly
 /// by the system when the database connection is closed.
+/// In fact, the intarray is not destroy until the connection is closed
+/// because there is no other way to destroy the associated module.
 pub fn drop_int_array(conn: &Connection, name: &str) -> Result<()> {
     conn.execute_batch(&format!("DROP TABLE temp.\"{0}\"", escape_double_quote(name)))
+    // http://www.mail-archive.com/sqlite-users%40mailinglists.sqlite.org/msg08423.html
+    // "Once a virtual table module has been created, it cannot be modified or destroyed, except by closing the database connection."
+    /*let aux: Option<()> = None;
+    conn.create_module(name, ptr::null() as *const ffi::sqlite3_module, aux)*/
 }
 
 init_module!(INT_ARRAY_MODULE,