| error: Undefined Behavior: reborrow through <TAG> at ALLOC[0x0] is forbidden |
| --> tests/fail/tree_borrows/write-during-2phase.rs:LL:CC |
| | |
| LL | fn add(&mut self, n: u64) -> u64 { |
| | ^^^^^^^^^ Undefined Behavior occurred here |
| | |
| = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental |
| = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information |
| = help: the accessed tag <TAG> has state Disabled which forbids this reborrow (acting as a child read access) |
| help: the accessed tag <TAG> was created here, in the initial state Reserved |
| --> tests/fail/tree_borrows/write-during-2phase.rs:LL:CC |
| | |
| LL | let res = f.add(unsafe { |
| | ^ |
| help: the accessed tag <TAG> later transitioned to Disabled due to a foreign write access at offsets [0x0..0x8] |
| --> tests/fail/tree_borrows/write-during-2phase.rs:LL:CC |
| | |
| LL | *alias = 42; |
| | ^^^^^^^^^^^ |
| = help: this transition corresponds to a loss of read and write permissions |
| = note: BACKTRACE (of the first span): |
| = note: inside `Foo::add` at tests/fail/tree_borrows/write-during-2phase.rs:LL:CC |
| note: inside `main` |
| --> tests/fail/tree_borrows/write-during-2phase.rs:LL:CC |
| | |
| LL | let res = f.add(unsafe { |
| | _______________^ |
| LL | | // This is the access at fault, but it's not immediately apparent because |
| LL | | // the reference that got invalidated is not under a Protector. |
| LL | | *alias = 42; |
| LL | | 0 |
| LL | | }); |
| | |______^ |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to 1 previous error |
| |
