[cyberpunk]

Is it true that 0x00000000 is a valid memory address on aix? I’m sure I read it somewhere but struggled to confirm it..

[pavlov]

Yes, I believe this was an optimization to allow IBM’s compiler to do speculative loads before a null check.

[cyberpunk]

Alien Infested uniX indeed :)

[TickleSteve]

thats true on many systems... nothing special about 0x0 other than NULL happens to be defined as 0 in most toolchains an some functions use NULL to report an error.