We got attention from Jason Orendorff at Mozilla:



On Tue, Nov 17, 2020, at 11:32 AM, Bugzilla@Mozilla wrote:
Do not reply to this email. You can add comments to this bug at https://bugzilla.mozilla.org/show_bug.cgi?id=1676615

Jason Orendorff [:jorendorff] changed Bug 1676615 at 2020-11-17 11:32:23 PST:


What
Removed
Added
CC
 
jorendorff@mozilla.com
Closed
 
2020-11-17 19:32:23
Resolution
---
INVALID
Status
UNCONFIRMED
RESOLVED

Comment # 1 on Bug 1676615 from Jason Orendorff [:jorendorff] at 2020-11-17 11:32:23 PST

This has always been invalid use of the API. JS_DefineProperty(cx, g2, "link", v, 0); requires that cx, g2, and v be same-compartment. Here the value v is g1, a global in a different compartment.

The rule is enforced with assertions in debug builds—we strongly recommend using a debug build for development, as there are many assertions that check API usage, and the API is very error-prone without those checks.

Marking this as RESOLVED INVALID which just means it looks like there is not a bug to fix.


Product/Component: Core :: JavaScript Engine
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