Handwaving RFC: hypothetical recalloc() API

[DJ Delorie]

"H. Peter Anvin" <hpa@zytor.com> writes:
> int recalloc(void * restrict * restrict old, size_t alignment,
> 	     size_t * restrict n, size_t size);

I wonder, at what point does such an interface become esoteric enough
that it's better to implement something application-specific through
mmap() than try to showhorn everyone's requirements into a single
function...