RFR(XS) 8240548 [TESTBUG] CDS NoClassToArchive.java fails with Graal

[David Holmes]

Hi Ioi,

On 9/03/2020 2:52 pm, Ioi Lam wrote:
> https://bugs.openjdk.java.net/browse/JDK-8240548
> http://cr.openjdk.java.net/~iklam/jdk15/8240548-NoClassToArchive.graal.v01/
> 
> This test should not be executed with graal.
> 
> This test started failing in valhalla/nestmate because the string
> "unsafe anonymous" is no longer printed by -Xlog:class+load=trace. However,
> the underlying problem is unrelated to nestmate. So I will fix the test in
> the mainline jdk/jdk and it can be synced down to nestmate.
> 
> The test assumes that when "java -version" is executed, only a very limited
> number of classes are loaded, and all of those are loaded from the default
> shared archive.
> 
> However, when graal is used as the JIT, many extra classes are loaded
> during VM start-up. Some of those are loaded dynamically from jrt:/.
> Some classes are also defined by LambdaMetafactory. This causes complexity
> that cannot be easily handled by this test.
> 
> The VM code covered by this test can be sufficiently tested with C1/C2. So
> there's no need to bend over backwards to run this test with graal.

Okay. I'd probably have that explanatory comment up the top of the file 
rather than within doTest(), but that's just a nit.

Thanks,
David

> Thanks
> - Ioi