1552022 - Synthesized constructors for derived classes ignore all arguments (with fields and no constructor() method)

Status: RESOLVED FIXED

(Core :: JavaScript Engine, task, P1)

Description

[Jason Orendorff [:jorendorff]]

Ashley noticed this.

class B {
    constructor(x) {
        console.log(x);
    }
}

class C extends B {
}

new C("C"); // prints "C"

class D extends B {
    asdf = 2;
}

new D("D"); // prints undefined :'(

The synthesized constructor should do super(...args), but currently it just does super().

Comment 1

[Ashley Hauck [:khyperia]]

Attachment: Bug 1552022 - Pass through arguments in synthesized constructors for derived classes.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/3944c733e417
Pass through arguments in synthesized constructors for derived classes. r=jorendorff

Comment 3

[Stefan Hindli [:stefan_hindli]]

https://hg.mozilla.org/mozilla-central/rev/3944c733e417