// This should fail even without validation/SB // compile-flags: -Zmiri-disable-validation -Zmiri-disable-stacked-borrows fn main() { let x = &1; // the `&1` is promoted to a constant, but it used to be that only the pointer is marked static, not the pointee let y = unsafe { &mut *(x as *const i32 as *mut i32) }; *y = 42; //~ ERROR read-only assert_eq!(*x, 42); }