error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block --> $DIR/issue-45729-unsafe-in-coroutine.rs:8:9 | LL | *(1 as *mut u32) = 42; | ^^^^^^^^^^^^^^^^^^^^^ dereference of raw pointer | = note: raw pointers may be null, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior error: aborting due to previous error For more information about this error, try `rustc --explain E0133`.