kMark              96 MMgc/GCAlloc.h enum ItemBit { kMark=1, kQueued=2, kFinalize=4, kHasWeakRef=8, kFreelist=kMark|kQueued };
kMark              96 MMgc/GCAlloc.h enum ItemBit { kMark=1, kQueued=2, kFinalize=4, kHasWeakRef=8, kFreelist=kMark|kQueued };