tree 4a968346013725244c965f2afe6861f3e1cd2ac0
parent 3c3dfe0efa859563e1fdbe51badd0ebf74760ff9
author Protobuf Team Bot <protobuf-github-bot@google.com> 1689706013 -0700
committer Copybara-Service <copybara-worker@google.com> 1689706389 -0700

Improve overall `unsafe` hygiene

This adds `#![deny(unsafe_op_in_unsafe_fn)]` which removes the
implicit `unsafe` block that `unsafe fn` does.

It also adds many more `SAFETY` docs, corrects some incomplete
ones, and catches a null pointer returned by `upb_Arena_New`.

PiperOrigin-RevId: 549067106