testing if data is allocated on the stack or heap

[user1234]

On Tuesday, 17 October 2017 at 17:27:17 UTC, Biotronic wrote:
> On Tuesday, 17 October 2017 at 15:33:02 UTC, drug wrote:
>> [...]
>
> I have very little knowledge about sbrk, so here's my solution.
>
> Tested on win32 and win64.
>
> [...]

Nice solution. Is `stackStart` thread local on purpose?