In theory the failures could be pretty insidious - data could be corrupted without any crash, or in a way that causes a crash in an almost unrelated part of the

In theory the failures could be pretty insidious - data could be corrupted without any crash, or in a way that causes a crash in an almost unrelated part of the program. I have no idea how likely the really squirrelly failure modes are, but there will be much scratching of heads and gnashing of teeth when they do pop up. The race detector probably helps a lot.