| error: Undefined Behavior: attempting a write access using <TAG> at ALLOC[0x0], but that tag does not exist in the borrow stack for this location |
| --> $DIR/return_pointer_aliasing2.rs:LL:CC |
| | |
| LL | unsafe { ptr.write(0) }; |
| | ^^^^^^^^^^^^ |
| | | |
| | attempting a write 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 SharedReadWrite retag at offsets [0x0..0x4] |
| --> $DIR/return_pointer_aliasing2.rs:LL:CC |
| | |
| LL | / mir! { |
| LL | | { |
| LL | | let _x = 0; |
| LL | | let ptr = &raw mut _x; |
| ... | |
| LL | | } |
| LL | | } |
| | |_____^ |
| help: <TAG> was later invalidated at offsets [0x0..0x4] by a Unique in-place function argument/return passing protection |
| --> $DIR/return_pointer_aliasing2.rs:LL:CC |
| | |
| LL | unsafe { ptr.write(0) }; |
| | ^^^^^^^^^^^^^^^^^^^^^^^ |
| = note: BACKTRACE (of the first span): |
| = note: inside `myfun` at $DIR/return_pointer_aliasing2.rs:LL:CC |
| note: inside `main` |
| --> $DIR/return_pointer_aliasing2.rs:LL:CC |
| | |
| LL | Call(_x = myfun(ptr), after_call) |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| = note: this error originates in the macro `::core::intrinsics::mir::__internal_remove_let` which comes from the expansion of the macro `mir` (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 previous error |
| |
