Crash with basic private method example

[kt3k]

Found in denoland/deno_std#1655

The following example exits with error status code at the middle of execution.

class A {
  a() {
    this.#b()
  }
  #b() {}
}
for (let i = 0; i < 1e5; i++) {
  console.log(i);
  new A().a();
}

$ deno run test.js
...
10623
10624
10625
10626
10627
10628
10629
zsh: trace trap  deno run test.js

Note: It doesn't have even rust backtrace. It always stops at 10629 on my machine (mac).

Deno v1.15.3 doesn't have this issue. It seems to have started from v1.16.0.

[sno2]

Can confirm it also shows same behavior and stops at 10629 on Windows and Linux (Ubuntu via WSL):

Edit: There isn't a trace trap error on Windows, though. It silently exits.

[DjDeveloperr]

Stops on 10225 for me. You can use echo %ERRORLEVEL% to know the exit code on Windows, shows -2147483645 but if you convert it to unsigned then to hex it's 0x80000003 (STATUS_BREAKPOINT) 🤔

[sno2]

Stops on 10225 for me. You can use echo %ERRORLEVEL% to know the exit code on Windows, shows -2147483645 but if you convert it to unsigned then to hex it's 0x80000003 (STATUS_BREAKPOINT) 🤔

Ah, nice. I just used $LastExitCode for powershell and also got exit code -2147483645 on Windows. Different number of iterations still, though.

[piscisaureus]

Looks like this is probably a V8 bug.

[kt3k]

Reported https://bugs.chromium.org/p/v8/issues/detail?id=12500

[syg]

Hi, V8 dev here. It is indeed a V8 bug, thank you for reporting. I'm happy deno is exercising the private field code paths and exposing these issues.

[lucacasonato]

Merged into 9.8 in https://chromium-review.googlesource.com/c/v8/v8/+/3386595. The fix will be present in Deno 1.18.

[bartlomieju]

Fixed in 1.18