[2/4] ntdll: add support for the HEAP_FREE_CHECKING_ENABLED style of heap overrun detection.

[Dan Kegel]

On Tue, Dec 1, 2009 at 11:22 AM, Alexandre Julliard <julliard at winehq.org> wrote:
> Validation should only happen when explicitly requested.

Should I submit a separate patch to remove the existing small arena
validation from RtlFreeHeap and RtlReAllocateHeap, then?

Or is that how Windows XP behaved (validating small heap
blocks but not large ones)?