Re: RFR(S): 8149334: JSON.parse(JSON.stringify([])).push(10) creates an array containing two elements

[Sundararajan Athijegannathan]

+1

On 2/8/2016 5:22 PM, Michael Haupt wrote:

Dear all,

please review this fix.
Bug: https://bugs.openjdk.java.net/browse/JDK-8149334
Webrev: http://cr.openjdk.java.net/~mhaupt/8149334/webrev.00

The problem here is that the transition from an immutable empty array (of the 
internal type ArrayData.UntouchedArrayData) to an array containing actual data 
would create an array with one entry before then appending the pushed element. 
The fix is to return an actually empty (if mutable) ArrayData instance in these 
cases.

Tested in 9-dev and 8u. As this was filed against 8u60, it will be backported.

Thanks,

Michael