"for own ... in" throws unexpected exception

[gustavderdrache]

> coffee --version
CoffeeScript version 1.6.3
> coffee -e 'x for own x in y'
TypeError: Cannot call method 'error' of undefined
    at new For (/usr/lib/node_modules/coffee-script/lib/coffee-script/nodes.js:2588:20)
    [stack trace omitted but available on request]

Also reproducible on the website, which gives the error "this.index is undefined".

[michaelficarra]

Just so you're aware of why it's an issue, for-own-in is not a thing. You're probably looking for for-own-of. But there should be a better error than that.

[gustavderdrache]

Yeah, sorry. I know it's a syntax error, but it's probably one that should be noted by the compiler rather than cause unexpected exceptions.

[vendethiel]

=> #3053

[michaelficarra]

Ah, thank you. I thought we already had an issue for this.