The no_mangle attribute is unsafe since Rust 2024

blog/content/edition-2/posts/05-cpu-exceptions/index.md

@@ -390,7 +390,7 @@ Now we can update the `_start` function of our `main.rs` to call `init` and then
 ```rust
 // in src/main.rs
 
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub extern "C" fn _start() -> ! {
     println!("Hello World{}", "!");
 
@@ -425,7 +425,7 @@ Let's create a test that ensures that the above continues to work. First, we upd
 
 /// Entry point for `cargo test`
 #[cfg(test)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub extern "C" fn _start() -> ! {
     init();      // new
     test_main();