| error: Undefined Behavior: trying to retag from <TAG> for SharedReadOnly permission at ALLOC[0x0], but that tag does not exist in the borrow stack for this location |
| --> tests/fail/both_borrows/pass_invalid_shr.rs:LL:CC |
| | |
| LL | foo(xref); |
| | ^^^^ this error occurs as part of 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 SharedReadOnly retag at offsets [0x0..0x4] |
| --> tests/fail/both_borrows/pass_invalid_shr.rs:LL:CC |
| | |
| LL | let xref = unsafe { &*xraw }; |
| | ^^^^^^ |
| help: <TAG> was later invalidated at offsets [0x0..0x4] by a write access |
| --> tests/fail/both_borrows/pass_invalid_shr.rs:LL:CC |
| | |
| LL | unsafe { *xraw = 42 }; // unfreeze |
| | ^^^^^^^^^^ |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to 1 previous error |
| |
