| error: Undefined Behavior: not granting access to tag <TAG> because that would remove [SharedReadOnly for <TAG>] which is strongly protected |
| --> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC |
| | |
| LL | pub fn safe(x: &i32, y: &mut Cell<i32>) { |
| | ^ not granting access to tag <TAG> because that would remove [SharedReadOnly for <TAG>] which is strongly protected |
| | |
| = 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] |
| --> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC |
| | |
| LL | let xref = &mut x; |
| | ^^^^^^ |
| help: <TAG> is this argument |
| --> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC |
| | |
| LL | pub fn safe(x: &i32, y: &mut Cell<i32>) { |
| | ^ |
| = note: BACKTRACE (of the first span): |
| = note: inside `safe` at tests/fail/both_borrows/aliasing_mut4.rs:LL:CC |
| note: inside `main` |
| --> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC |
| | |
| LL | safe_raw(xshr, xraw as *mut _); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to 1 previous error |
| |
