am a961d3ba: am d2be39a0: Merge "Fix race condition in BumpPointerSpace::Walk."
am a961d3ba: am d2be39a0: Merge "Fix race condition in BumpPointerSpace::Walk."

* commit 'a961d3ba1e6884007305f460520237b86f01d35a':
  Fix race condition in BumpPointerSpace::Walk.

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst