1296154 - Console does not display stack trace for uncaught non-Error

Status: RESOLVED DUPLICATE of bug 996060

(Core :: JavaScript Engine, defect)

Description

[Andrew Morris]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Steps to reproduce:

Ran this code in jsbin:

---

function MyError(message) {
  this.name = 'MyError';
  this.message = message || 'Default Message';
  this.stack = (new Error()).stack;
}

MyError.prototype = Object.create(Error.prototype);
MyError.prototype.constructor = MyError;

throw new MyError();

---

http://output.jsbin.com/vudiyo

(This is the way MDN recommends extending Error: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error)


Actual results:

Error in console did not provide access to stack trace.


Expected results:

Error in console should provide access to stack trace, probably in the same way as a plain throw new Error() would, which provides a triangle you can click to expand a textbox containing it.

Comment 1

[Tooru Fujisawa [:arai]]

this would be the issue for displaying stack trace for non-Error instance.
moving to JavaScript Engine component as this is same on js shell.