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On Mon, Nov 9, 2020 at 7:22 PM Ranier Vilela <> wrote:
> I never see any platform that NULL is not all-zeroes representation.

Well, Antonin mentioned obscure machines, but check out this LLVM
thread [1] about non-zero NULL on AMD GCN (OpenCL system).
In terms of time, it is not as old and obscure, just... behaves
differently on different address spaces.