RFR 8171173: EXCEPTION_ACCESS_VIOLATION running VirtualObjectDebugInfoTest.java

[Tom Rodriguez]

http://cr.openjdk.java.net/~never/8171173/webrev
https://bugs.openjdk.java.net/browse/JDK-8171173

This appears to be a test bug.  Any oops mentioned in debug info for rematerialized objects must also appear in the oop maps.  Since these are being constructed by hand that was being missed.  I wasn’t able to reproduce the crash but the code is clearly wrong and the hs_err supports the notion that a GC occurred at an unusual time.  Tested by inspected the generated code debug info and oop maps.

tom