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error: Undefined Behavior: write access through <TAG> at ALLOC[0x0] is forbidden
--> RUSTLIB/core/src/mem/mod.rs:LL:CC
|
LL | crate::intrinsics::write_via_move(dest, src);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 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> is foreign to the protected tag <TAG> (i.e., it is not a child)
= help: this foreign write access would cause the protected tag <TAG> (currently Frozen) to become Disabled
= help: protected tags must never be Disabled
help: the accessed tag <TAG> was created here
--> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC
|
LL | y.set(1);
| ^^^^^^^^
help: the protected tag <TAG> was created here, in the initial state Frozen
--> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC
|
LL | pub fn safe(x: &i32, y: &mut Cell<i32>) {
| ^
= note: BACKTRACE (of the first span):
= note: inside `std::mem::replace::<i32>` at RUSTLIB/core/src/mem/mod.rs:LL:CC
= note: inside `std::cell::Cell::<i32>::replace` at RUSTLIB/core/src/cell.rs:LL:CC
= note: inside `std::cell::Cell::<i32>::set` at RUSTLIB/core/src/cell.rs:LL:CC
note: inside `safe`
--> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC
|
LL | y.set(1);
| ^^^^^^^^
note: inside `main`
--> tests/fail/both_borrows/aliasing_mut4.rs:LL:CC
|
LL | safe_raw(xshr, xraw as *mut _);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace
error: aborting due to 1 previous error
|
