RFR (XS) 8188828 Intermittent ClassNotFoundException: jdk.test.lib.Platform for compiler tests

Jonathan Gibbons jonathan.gibbons at oracle.com
Mon Oct 9 18:07:54 UTC 2017

Another possibility is to design the libraries so that they can be built 
with a wildcard build, as in @build mypackage.*

I don't see that we will (or want to) ever get to a point in jtreg where 
each library class can identify its own dependencies, such as suggested 

If the libraries can be prebuilt ahead of time, I don't see why they 
can't be built by jtreg.

-- Jon

On 10/9/17 10:54 AM, Ioi Lam wrote:
> There are several possibilities. One is to pre-compile a bunch of 
> libraries during the build time, and put them in the classpath using 
> the jtreg -cpa: option.
> Another possibility is to change jtreg to better express the 
> dependency between different classes compiled by jtreg.
> Thanks
> - Ioi
> On 10/8/17 6:33 PM, David Holmes wrote:
>> Hi Ioi,
>> This seems like a temporary workaround - fine for now - but what is 
>> the real fix here? It's crazy that one test library class can't use 
>> another class from the same test library!
>> Thanks,
>> David
>> On 7/10/2017 6:19 AM, Ioi Lam wrote:
>>> Please review this very simple change:
>>> https://bugs.openjdk.java.net/browse/JDK-8188828
>>> http://ioilinux.us.oracle.com/webrev/jdk10/8188828_compiler_test_class_not_found.v01/ 
>>> The dependency of
>>>      FileInstaller -> Utils -> JDKToolLauncher -> Platform
>>> has caused many intermittent ClassNotFoundException in the hotspot 
>>> nightly runs.
>>> While this fix does not address the root cause (proper dependencies 
>>> are not
>>> specified in the test cases -- which we are planning to fix), we 
>>> will hopefully
>>> see much fewer occurrences of this annoying failure scenario.
>>> Thanks a lot to Igor for suggesting the simple fix!
>>> - Ioi

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