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NS_ERROR_XPC_BAD_OP_ON_WN_PROTO error when loaded into Firefox OS simulator #29

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townxelliot opened this issue Sep 20, 2013 · 3 comments
Closed

NS_ERROR_XPC_BAD_OP_ON_WN_PROTO error when loaded into Firefox OS simulator #29

townxelliot opened this issue Sep 20, 2013 · 3 comments

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@townxelliot
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Environment:

  • Firefox (21.0 and 22.0 and 25.0) + Firefox OS Simulator 4.0
    and
    Firefox 25.0 + Firefox OS Simulator 5.0pre4
  • Fedora Linux 17 64bit

I get this error:

NS_ERROR_XPC_BAD_OP_ON_WN_PROTO: Illegal operation on WrappedNative prototype object

if I try to include the x-tags library in a project and load it into the Firefox OS simulator. x-tags works fine if I push it to the device itself. (So I'm not sure if I should be raising a bug for the simulator too/instead.)

To reproduce:

  • Make an HTML file with a script tag which pulls in x-tag-core (I'm using a version checked out with bower, 0.8.1):
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="x-tag-core/dist/x-tag-core.js"></script>
</head>
<body>
</body>
</html>
  • Make a manifest.webapp file for it in the same directory:
{
  "name": "x-tags",
  "type": "privileged",
  "description": "testing x-tags",
  "launch_path": "/index.html",
  "icons": {},
  "developer": {
    "name": "foo",
    "url": "http://foo/"
  },
  "default_locale": "en",
  "permissions": {}
}
  • Load the project's manifest in the simulator, with "Connect" enabled so you can see the error messages.

The error is being raised by line 2902 of the built file, which corresponds with https://github.com/x-tag/core/blob/master/src/core.js#L856.

If I comment this line out, x-tags loads fine and works as expected.

Also, it looks as though L856 does approximately the same thing as the line before (though I imagine there are differences and it's probably important that a property is defined, as well as set explicitly).
@s-clerc
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s-clerc commented Nov 17, 2013

I have not been able to reproduce this problem on Aurora 27.0a2 (2013-11-16).
I have also tested this on firefox 25.01.
Both tests were conducted using the simulator 4, running on OS X Mavericks.
This leads me to believe that there may be a problem with simulator 5

@csuwildcat
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This should have been resolved by this commit: 7f06da1#diff-7eb52b366866677666470e019283c8ea

@ebuildy
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ebuildy commented Apr 16, 2014

I still get the error from http://m.qwant.com/?q=github , from FirefoxOS mobile ZTE.

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4 participants
@townxelliot @csuwildcat @ebuildy @s-clerc