Node: Node v4 not respect const scope in while block

[lijunle]

• Version: 4.7.0
• Platform: Linux, Mac, Windows

Demo code: https://github.com/lijunle/bug-node-v4-while-const/blob/master/index.js

The build output: Travis, AppVeyor. It is causing a dead loop in the while block.

This bug only happens in v4 and not v6 or v7. I understand that, v4 is in maintain status, but I think this is a critical bug.

[targos]

/cc @nodejs/v8

[targos]

Note that the bug only exists in sloppy mode. You can work around it with a 'use strict'; at the beginning of your file.

[sam-github]

Report to https://bugs.chromium.org/p/v8/issues/list

[benjamingr]

This has been a known issue for a year.

[evanlucas]

Going to close as this is a known issue and v4.x is in maintenance mode now. If you want correct functionality for const in v4, make sure you 'use strict'