RFR (S) 8210512: vmTestbase/nsk/jdi/ObjectReference/referringObjects/referringObjects002/referringObjects002.java fails with unexpected size of ClassLoaderReference.referringObjects
David Holmes
david.holmes at oracle.com
Mon Sep 10 05:51:21 UTC 2018
Bug: https://bugs.openjdk.java.net/browse/JDK-8210512
Webrev: http://cr.openjdk.java.net/~dholmes/8210512/webrev/
After the fix for JDK-8209361 where we modified JVM-TI to treat an
unresolved CP klass entry to a loaded klass as a resolved CP entry, the
listed test starting failing due to finding an extra reference to the
test class. As outlined in the bug report this extra reference:
17: instance of java.lang.Class(reflected
class=nsk.share.jdi.TestClass1, id=792)
actually comes from the class itself. Every classfile has a
self-referential entry in the constant pool (this_klass in JVMS 4.1) and
that is what we were encountering here.
I would argue that such an unresolved reference from a class to itself
should never be treated as a "real" reference from a JVM TI perspective,
and so we ship skip it - which is what the fix does:
- if (klass == NULL) {
+ if (klass == NULL || klass == ik) {
continue;
Testing: the test concerned
joatc testing of test that failed in 8209361 (TBD)
mach5 tiers 1-3 (TBD)
jvmti (TBD)
As noted testing is still TBD other then actual test but there are
technical delays with that so I'll get the RFR out anyway.
Thanks,
David
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