6728478: Assertion at parallel promotion from young to old generation
Summary: The fix avoids a call to address_for_index() in this particular situation where it is not known if the passed index is in bounds.
Reviewed-by: tonyp
6739357: CMS: Switch off CMSPrecleanRefLists1 until 6722113 can be fixed
Summary: Temporarily switch off the precleaning of Reference lists completely until related issues are fixed in 6722113.
Reviewed-by: jmasa, poonam, tonyp