hg: jdk/hs: 8198393: Instrumentation.retransformClasses() throws NullPointerException when handling a zero-length array

[alexey.menkov at oracle.com]

Changeset: ab0f93ba0507
Author:    amenkov
Date:      2018-03-28 12:10 -0700
URL:       http://hg.openjdk.java.net/jdk/hs/rev/ab0f93ba0507

8198393: Instrumentation.retransformClasses() throws NullPointerException when handling a zero-length array
Reviewed-by: sspitsyn, cjplummer

! src/java.instrument/share/classes/sun/instrument/InstrumentationImpl.java
+ test/hotspot/jtreg/serviceability/jvmti/RetransformClassesZeroLength.java