*** old/src/share/vm/memory/space.cpp	Fri Oct 17 15:27:20 2014
--- new/src/share/vm/memory/space.cpp	Fri Oct 17 15:27:20 2014

*** 387,397 ****
--- 387,397 ----
    while (size > compaction_max_size) {
      // switch to next compaction space
      cp->space->set_compaction_top(compact_top);
      cp->space = cp->space->next_compaction_space();
      if (cp->space == NULL) {
!       cp->gen = GenCollectedHeap::heap()->prev_gen(cp->gen);
!       cp->gen = GenCollectedHeap::heap()->young_gen();
        assert(cp->gen != NULL, "compaction must succeed");
        cp->space = cp->gen->first_compaction_space();
        assert(cp->space != NULL, "generation must have a first compaction space");
      }
      compact_top = cp->space->bottom();