Is Zig safer than Unsafe Rust?

[giscus[bot]]

Is Zig safer than Unsafe Rust?

Recently, a hotly debated post trending on Reddit: When Zig is safer and faster than Rust. Although the title says Rust, it's actually comparing with Unsafe Rust. Based on that post, I’d like to discu

https://rustmagazine.org/issue-3/is-zig-safer-than-unsafe-rust/

[jiacai2050]

Thanks for share.

For the array example, I think the author's main idea is we cannot have another reference beside a mutable reference.

    let values: &mut [Value] = std::slice::from_raw_parts_mut(values, len);
    // I can use the ergonomics of iterators!
    for val in values.iter_mut() {
        // ...
        // Perform actions on each `val` of type &mut Value
        val.0 += 1;
    }

    let values2: &mut [Value] = std::slice::from_raw_parts_mut(values, len);

When we define value2, the whole block is UB since we don't know what compiler will do in this case.