Actually, this (to me) looks like a good change. I assume many people's code is having problem with uninitialised memory. If your code worked before, it will s

Actually, this (to me) looks like a good change. I assume many people's code is having problem with uninitialised memory. If your code worked before, it will still work now with no changes, and in practice I've rarely noticed zeroing a buffer causing any measurable overhead (zeroing is so cheap compared to the cost of then filling the buffer anyway. In fact, it can be cheaper to zero, because there is no need to read the old stale values from memory into cache). There is also a new better designed interface, but the old one still works fine. I can't really imagine a better change.