hg: jdk/submit: 8212937: Parent class loader may not have a referred ClassLoaderData instance when obtained in Klass::class_in_module_of_loader

[lois.foltan at oracle.com]

Changeset: de25152e5ec4
Author:    lfoltan
Date:      2018-11-07 13:54 -0500
URL:       http://hg.openjdk.java.net/jdk/submit/rev/de25152e5ec4

8212937: Parent class loader may not have a referred ClassLoaderData instance when obtained in Klass::class_in_module_of_loader
Summary: Fix to obtain the class loader's name from the java.lang.ClassLoader object instead of its ClassLoaderData.
Reviewed-by: coleenp, mbalao, sgehwolf

! src/hotspot/share/oops/klass.cpp
+ test/hotspot/jtreg/runtime/LoaderConstraints/duplicateParentLE/ParentClassLoader.java
+ test/hotspot/jtreg/runtime/LoaderConstraints/duplicateParentLE/PreemptingChildClassLoader.java
+ test/hotspot/jtreg/runtime/LoaderConstraints/duplicateParentLE/Test.java