Snapshotting is persisting the cwd

[arcanis]

Version

v20.6.1

Platform

Darwin

Subsystem

snapshots

What steps will reproduce the bug?

Generate a snapshot of the given script, then run it from a different directory. The process.cwd() function will keep returning the cwd you had while building the snapshot.

const v8 = require(`v8`);

if (v8.startupSnapshot.isBuildingSnapshot()) {
    v8.startupSnapshot.setDeserializeMainFunction(() => {
        console.log(process.cwd());
    });
}

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

No response

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

It should return the actual cwd.

What do you see instead?

It returns the cwd at the time of --build-snapshot.

Additional information

No response

[bnoordhuis]

It's because the current working directory is cached (introduced in #27224 FWIW, before snapshots were a thing.)

Should be easy to fix by clearing cachedCwd in lib/internal/bootstrap/switches/does_own_process_state.js. PR welcome.