examples straight from hell

Author: RalfJung

tests/ui/consts/miri_unleashed/mutable_references_err.rs

@@ -54,6 +54,8 @@ const POINTS_TO_MUTABLE2: &i32 = unsafe { &*MUTABLE_REF };
 //~^ ERROR: evaluation of constant value failed
 //~| accesses static
 
+const POINTS_TO_MUTABLE_INNER: *const i32 = &mut 42 as *mut _ as *const _;
+
 fn main() {
     unsafe {
         *MUH.x.get() = 99;

tests/ui/consts/miri_unleashed/static-no-inner-mut.rs

@@ -21,11 +21,12 @@ static REFMUT2: &mut i32 = {let mut x = 0; &mut {x}}; //~ERROR undefined behavio
 // commented out.)
 // static RAW: *const AtomicI32 = &AtomicI32::new(42);
 
-struct SyncPtr<T>(*const T);
+struct SyncPtr<T> { x : *const T }
 unsafe impl<T> Sync for SyncPtr<T> {}
 
 // This one does not get promoted, and then the reference is simply too short-lived.
-static RAW_SYNC: SyncPtr<AtomicI32> = SyncPtr(&AtomicI32::new(42)); //~ERROR dangling pointer
-static RAW_MUT: SyncPtr<i32> = SyncPtr(&mut 42 as *mut _ as *const _); //~ERROR dangling pointer
+static RAW_SYNC: SyncPtr<AtomicI32> = SyncPtr { x: &AtomicI32::new(42) };
+static RAW_MUT_CAST: SyncPtr<i32> = SyncPtr { x : &mut 42 as *mut _ as *const _ };
+static RAW_MUT_COERCE: SyncPtr<i32> = SyncPtr { x: &mut 0 };
 
 fn main() {}