sqlite: re-filtering a virtual-table cursor skips generator cleanup

[trivikr]

Version

main

Platform

N/A

Subsystem

sqlite

What steps will reproduce the bug?

import { DatabaseSync } from 'node:sqlite';

const db = new DatabaseSync(':memory:');

let cleaned = 0;
db.createModule('m', {
  columns: [{ name: 'input', type: 'INTEGER', hidden: true }],
  *rows(input) {
    try { yield [input]; } finally { cleaned++; }
  },
});

db.exec('CREATE TABLE t(a); INSERT INTO t VALUES (1), (2)');
db.prepare('SELECT a FROM t WHERE EXISTS(SELECT 1 FROM m(t.a))').all();
console.log(cleaned);  // 1, expected 2

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior? Why is that the expected behavior?

Both rows() calls (for t.a = 1 and t.a = 2) run their finally, so cleaned is 2.

What do you see instead?

cleaned is 1; the first generator is suspended and discarded by the re-filter and its finally never runs.

Additional information

No response