Updates:
Cc: [email protected] [email protected]
Comment #2 on issue 4177 by [email protected]: Arguments object property
descriptor errors
https://code.google.com/p/v8/issues/detail?id=4177
Strangely it looks like this should be properly handled in
SlowSloppyArgumentsElementsAccessor::ReconfigureImpl, but for some reason
it's not working (I've stepped through with gdb and that code is definitely
running). Adding verwaest@ in case he sees what's wrong. Here's the test
case I'm working with, which doesn't even change configurability:
function argumentsAndSetMutableBinding(a) {
Object.defineProperty(arguments, "0", {enumerable: false});
a = 2;
print(a);
print(arguments[0]);
}
argumentsAndSetMutableBinding(1);
This prints "2" and then "1".
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