[feffe]

I don't see the point of passing the size to a "free" function. I don't see how it could be used to speed up de-allocation. Additionally most usage would probably not want to keep the size around.

But I concur that realloc is mostly pointless. For code that want to grow or shrink, I think it's much better for it to know the data block size. I think there's very little opportunity to happen to have free memory next to your allocation that can be "grown into". At least for slab like allocators, so the growing room is minimal.

It's a bit difficult to unify all APIs because data will be needlessly passed around, when in most cases you don't care. Aligned allocation may also need a slightly different implementation anyway.

realloc and calloc are warts in my book...