[9] RFR (XS): JDK-8151020: [TESTBUG] UnsafeGetStableArrayElement::testL_* fail intermittently

Aleksey Shipilev aleksey.shipilev at oracle.com
Wed Mar 2 12:07:14 UTC 2016

On 03/02/2016 02:51 PM, Vladimir Ivanov wrote:
> http://cr.openjdk.java.net/~vlivanov/8151020/webrev.00
> https://bugs.openjdk.java.net/browse/JDK-8151020
> Some cases in UnsafeGetStableArrayElement are not reliable: there's no
> way to ensure that only some part of an OOP is 0 or not.

So the test fails when "new Object()" OOP has zeros in some bits, and
reading shorter bit stride from that OOP makes the test believe that the
field was "unchanged". Bummer.

> The fix is just to run the tests (hoping to trigger an assertion if
> anything goes wrong) w/o checking the results.

Looks good.


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