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Falsehoods programmers believe about null pointers (purplesyringa.moe)

submitted 2 days ago by chaospatterns to c/[email protected]

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[–] [email protected] 5 points 1 day ago

Small nit:

CHERI is even weirder. CHERI pointers store 128-bit capabilities in addition to the 64-bit address we’re used to

The 128-bit capability (actually 129 since there's a tag bit) includes the address. It's 64-bit address + 64-bit metadata + 1-bit tag = 129-bit capability.