Proposed addition of malloc_size_np()

[Jason Evans]

Robert Watson wrote:
> I wonder if the intuitive objection people are raising is actually with 
> the name.  Since malloc_size() is defined on at least one platform to 
> return the requested size, maybe a name like malloc_allocated_size() (or 
> something a bit more compact) would help avoid that confusion, and make 
> it clear that the consumer is getting back a commitment and not a hint 
> for future realloc(), etc.

Maybe you're right.  We could just call it malloc_usable_size() and be 
compatible with Linux.

Jason