fabeca3458b38a3d8930cb0cbc866388c3f120f1 refactor: Avoid UB in SHA3_256::Write (MarcoFalke)
fad4032b219e58300f8d0a74bbcf38ef26fa89d0 refactor: Drop unused UCharCast (MarcoFalke)
Pull request description:
It is UB to apply a distance to a pointer or iterator further than the
end itself, even if the distance is (partially) revoked later on.
Fix the issue by advancing the data pointer at most to the end.
This fix is required to adopt C++ safe buffers https://github.com/bitcoin/bitcoin/issues/31272.
Also included is a somewhat unrelated commit.
ACKs for top commit:
sipa:
utACK fabeca3458b38a3d8930cb0cbc866388c3f120f1
theuni:
utACK fabeca3458b38a3d8930cb0cbc866388c3f120f1
hebasto:
ACK fabeca3458b38a3d8930cb0cbc866388c3f120f1.
Tree-SHA512: 78c53691322b72c3ba9c25ec94eec275dbbbc3049b0ad45e7d9fb2df0afbbaa905b0d8fa7106a3582f937bb1dc15a7592c4ad2d80fe4cff1062a3acfd3638f08