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Bug 1030420 - Fix up unwrapDebuggerObjectGlobal to handle addon scopes. r=jimb

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This commit is contained in:
Bobby Holley 2014-09-24 09:17:34 +02:00
parent 0a4400066c
commit 8928dc5b6a
1 changed files with 10 additions and 5 deletions
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15
toolkit/devtools/server/actors/webbrowser.js
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@ -96,15 +96,20 @@ exports.sendShutdownEvent = sendShutdownEvent;
* failed.
*/
const unwrapDebuggerObjectGlobal = wrappedGlobal => {
let global;
try {
global = wrappedGlobal.unsafeDereference();
// Because of bug 991399 we sometimes get nuked window references here. We
// just bail out in that case.
//
// Note that addon sandboxes have a DOMWindow as their prototype. So make
// sure that we can touch the prototype too (whatever it is), in case _it_
// is it a nuked window reference.
let global = wrappedGlobal.unsafeDereference();
Object.getPrototypeOf(global);
return global;
}
catch (e) {
// Because of bug 991399 we sometimes get bad objects here. If we
// can't dereference them then they won't be useful to us.
return undefined;
}
return global;
};
/**