[tgv]

It's not just unsafe, it's this:

    let r = unsafe { &*p };

It looks as if it's building structs out of information in (mutable pointers) to other structs without an Rc in sight. Which makes sense for a C parser: you've got a table with data, so you just link to it. It's fast, and when you know you're not going to touch it, it's safe. But this doesn't make the Rust code any better than the C code.

[malisper]

Note that the code I believe you are referring to is from the parser which was generated with c2rust. The Postgres parser is generated from yacc/bison so rather than try to rewrite it idiomatically, I did so mechanically.

[tgv]

Why not just link to the C code then?

[ykonstant]

Genius! Rewrite Postgres in Rust by rewriting Rust in C!