error: Undefined Behavior: attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
--> $DIR/fnentry_invalidation.rs:LL:CC
|
LL | let _oof = *z;
| ^^
| |
| attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
| this error occurs as part of an access at ALLOC[0x0..0x4]
|
= help: this indicates a potential bug in the program: it performed an invalid operation, but the Stacked Borrows rules it violated are still experimental
= help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information
help: <TAG> was created by a SharedReadWrite retag at offsets [0x0..0x4]
--> $DIR/fnentry_invalidation.rs:LL:CC
|
LL | let z = &mut x as *mut i32;
| ^^^^^^
help: <TAG> was later invalidated at offsets [0x0..0x4] by a Unique FnEntry retag
