snapframework/snap-core — comment on commit 53b8d6c3defa6214067696b59536e877db7295a6
File:  line 0
By meiersi:

I noticed that my results do not directly apply to your case, as I wasn't reusing the buffers. However, I never found a convincing benchmark that justified the unsafety introduced by buffer reuse. If this is one, then that would be interesting. Otherwise, I suggest not using this function. The current plan is to remove this function from the public API once the port to bytestring is done.