From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2005-12-23 04:22:26
Daryle Walker wrote:
> Shouldn't it be applied only if std::malloc returns NULL on 0-sized
> allocations? A std::malloc implementation that returns unique pointers for
> zero sizes is OK. Maybe something like:
>
> void * p = std::malloc( n );
> if ( !n && !p ) p = std::malloc( 1 );
> return p;
>
> would be better?
As far as I can tell, memory allocators usually allocate some smallest
possible quantity (say 8 or 16 bytes), no matter how small the size is.
This happens even on zero sized reuqests, when the allocator returns a non
zero pointer.
So my proposed fix just does what the allocator does anyway. I don't think
we need the extra complication. Besides, zero sized requests are probably
rare anyway.
Markus