| error: Undefined Behavior: trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location |
| --> $DIR/illegal_read7.rs:LL:CC |
| | |
| LL | let _val = *x.get_mut(); |
| | ^ |
| | | |
| | trying to retag from <TAG> for SharedReadWrite permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location |
| | this error occurs as part of two-phase retag 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 Unique retag at offsets [0x0..0x4] |
| --> $DIR/illegal_read7.rs:LL:CC |
| | |
| LL | let x = &mut *raw; |
| | ^^^^^^^^^ |
| help: <TAG> was later invalidated at offsets [0x0..0x4] by a read access |
| --> $DIR/illegal_read7.rs:LL:CC |
| | |
| LL | let _val = ptr::read(raw); |
| | ^^^^^^^^^^^^^^ |
| = note: BACKTRACE (of the first span): |
| = note: inside `main` at $DIR/illegal_read7.rs:LL:CC |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to previous error |
| |
