| error: Undefined Behavior: reborrow through <TAG> at ALLOC[0x0] is forbidden |
| --> tests/fail/tree_borrows/protector-write-lazy.rs:LL:CC |
| | |
| LL | unsafe { println!("Value of funky: {}", *funky_ptr_lazy_on_fst_elem) } |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ 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/protector-write-lazy.rs:LL:CC |
| | |
| LL | unsafe { (&mut *(ptr_to_vec.wrapping_add(1))) as *mut i32 }.wrapping_sub(1); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| help: the accessed tag <TAG> later transitioned to Disabled due to a protector release (acting as a foreign write access) on every location previously accessed by this tag |
| --> tests/fail/tree_borrows/protector-write-lazy.rs:LL:CC |
| | |
| LL | } |
| | ^ |
| = help: this transition corresponds to a loss of read and write permissions |
| = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) |
| |
| note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace |
| |
| error: aborting due to 1 previous error |
| |
