| 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/box-cell-alias.rs:LL:CC |
| | |
| LL | unsafe { (*ptr).set(20) }; |
| | ^^^^^^ |
| | | |
| | 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 retag at ALLOC[0x0..0x1] |
| | |
| = 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..0x1] |
| --> $DIR/box-cell-alias.rs:LL:CC |
| | |
| LL | let ptr: *const Cell<u8> = &*val; |
| | ^^^^^ |
| help: <TAG> was later invalidated at offsets [0x0..0x1] by a Unique retag |
| --> $DIR/box-cell-alias.rs:LL:CC |
| | |
| LL | let res = helper(val, ptr); |
| | ^^^ |
| = note: BACKTRACE (of the first span): |
| = note: inside `helper` at $DIR/box-cell-alias.rs:LL:CC |
| note: inside `main` |
| --> $DIR/box-cell-alias.rs:LL:CC |
| | |
| LL | let res = helper(val, ptr); |
| | ^^^^^^^^^^^^^^^^ |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to previous error |
| |
