[9] RFR 8072369: [TESTBUG] Remove potentially insecure class cast in some hotspot tests

Konstantin Shefov konstantin.shefov at oracle.com
Wed Oct 7 15:28:48 UTC 2015

Hi Christian

The assumption that the Application Class Loader is an instance of 
URLClassLoader can be false, because, AFAIK, it is not documented anywhere.
This may become false in the future releases of JDK.
That is why it is better not to relay on this assumption.


06.10.2015 22:35, Christian Thalinger пишет:
>> On Sep 9, 2015, at 3:16 AM, Konstantin Shefov 
>> <konstantin.shefov at oracle.com <mailto:konstantin.shefov at oracle.com>> 
>> wrote:
>> Description of the fix.
>> Some tests in hotspot repo use class cast from Application class 
>> loader to URLClassLoader, but Application class loader is not 
>> guaranteed to be always an instance of a URLClassLoader.
> Please excuse my lack of knowledge here but in what configuration does 
> this happen?
>> The tests should be changed so that they do not cast appclassloader 
>> to URLClassLoader.
>> -Konstantin
>> On 09/08/2015 07:01 PM, Konstantin Shefov wrote:
>>> Hello
>>> Please review a test bug fix.
>>> JBS entry: https://bugs.openjdk.java.net/browse/JDK-8072369
>>> Webrev: http://cr.openjdk.java.net/~kshefov/8072369/webrev.00
>>> Thanks
>>> -Konstantin

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