hg: jdk/sandbox: 8213898: CDS dumping of springboot asserts in G1ArchiveAllocator::alloc_new_region

[chris.hegarty at oracle.com]

Changeset: 4d8a023c2a03
Author:    jiangli
Date:      2018-11-16 13:23 -0500
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/4d8a023c2a03

8213898: CDS dumping of springboot asserts in G1ArchiveAllocator::alloc_new_region
Summary: HeapRegionManager::find_highest_free needs to check if the region obtained from the HeapRegionManager::_regions is available.
Reviewed-by: tschatzl, sjohanss

! src/hotspot/share/gc/g1/heapRegionManager.cpp