| error: Undefined Behavior: write access through <TAG> is forbidden |
| --> $DIR/unique.rs:LL:CC |
| | |
| LL | *uniq.as_ptr() = 3; |
| | ^^^^^^^^^^^^^^^^^^ write access through <TAG> is forbidden |
| | |
| = 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: the accessed tag <TAG> has state Frozen which forbids this child write access |
| help: the accessed tag <TAG> was created here, in the initial state Reserved |
| --> $DIR/unique.rs:LL:CC |
| | |
| LL | let refmut = &mut data; |
| | ^^^^^^^^^ |
| help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x1] |
| --> $DIR/unique.rs:LL:CC |
| | |
| LL | *uniq.as_ptr() = 1; // activation |
| | ^^^^^^^^^^^^^^^^^^ |
| = help: this transition corresponds to the first write to a 2-phase borrowed mutable reference |
| help: the accessed tag <TAG> later transitioned to Frozen due to a foreign read access at offsets [0x0..0x1] |
| --> $DIR/unique.rs:LL:CC |
| | |
| LL | let _definitely_parent = data; // definitely Frozen by now |
| | ^^^^ |
| = help: this transition corresponds to a loss of write permissions |
| = note: BACKTRACE (of the first span): |
| = note: inside `main` at $DIR/unique.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 |
| |
