sqlite segv

<?php
$db = new SQLite3(':memory:');
$db->createFunction('evil', function () {
    global $stmt;
    $stmt->close();       
    return 1;
});
$stmt = $db->prepare("SELECT evil()");
$res = $stmt->execute();

==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000063 ... READ
    #0 sqlite3ApiExit  (libsqlite3.so.0+0x912b4)
    #1 sqlite3_step    (libsqlite3.so.0+0xe1fb0)
    #2 zim_SQLite3Stmt_execute  ext/sqlite3/sqlite3.c:1901:16

8.6.0-dev