| error: Undefined Behavior: attempting a read access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location |
| --> $DIR/illegal_read_despite_exposed1.rs:LL:CC |
| | |
| LL | let _val = *root2; |
| | ^^^^^^ |
| | | |
| | attempting a read 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 Unique retag at offsets [0x0..0x4] |
| --> $DIR/illegal_read_despite_exposed1.rs:LL:CC |
| | |
| LL | let root2 = &mut *exposed_ptr; |
| | ^^^^^^^^^^^^^^^^^ |
| help: <TAG> was later invalidated at offsets [0x0..0x4] by a write access |
| --> $DIR/illegal_read_despite_exposed1.rs:LL:CC |
| | |
| LL | *exposed_ptr = 0; |
| | ^^^^^^^^^^^^^^^^ |
| = note: BACKTRACE (of the first span): |
| = note: inside `main` at $DIR/illegal_read_despite_exposed1.rs:LL:CC |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to 1 previous error |
| |
