PING^3: RFD: C2 bug: 8157306 random infrequent null pointer exceptions in javac

Vladimir Kozlov vladimir.kozlov at
Thu Jul 28 04:02:13 UTC 2016

I reproduced it running jtreg in hotspot/test:

jtreg -testjdk:$JAVA_HOME -v -vmoptions:'-Xcomp' compiler/calls/fromCompiled/

and other compiler/calls tests.

It crashed not in test execution but during test compilation:

ACTION: compile -- Error. unexpected exit code from javac: 6

That is why you need to use -vmoptions. I did not see other types of the failure in open tests.


On 7/26/16 12:50 AM, Andrew Haley wrote:
> On 25/07/16 22:20, Vladimir Kozlov wrote:
>> I finally got time to verify that changes in lcm without the assert
>> do not introduce regression - tests failed without lcm changes. I am
>> pushing only lcm.cpp change as you suggested. And I filed a separate
>> bug for failing cases with the assert.
> Thank you!  I'd like to have a stab at that bug for the failing cases if I
> could only reproduce it.  Oh well.
> Andrew.

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