rust/tests/fail/stacked_borrows/transmute-is-no-escape.stderr
2022-08-31 17:32:39 +02:00

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error: Undefined Behavior: attempting a write access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location
--> $DIR/transmute-is-no-escape.rs:LL:CC
|
LL | unsafe { *raw = 13 };
| ^^^^^^^^^
| |
| attempting a write 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 [0x4..0x8]
--> $DIR/transmute-is-no-escape.rs:LL:CC
|
LL | let raw = (&mut x[1] as *mut i32).wrapping_offset(-1);
| ^^^^^^^^^
= note: BACKTRACE:
= note: inside `main` at $DIR/transmute-is-no-escape.rs:LL:CC
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
error: aborting due to previous error