error: Undefined Behavior: dereferencing pointer failed: $HEX[noalloc] is a dangling pointer (it has no provenance) --> $DIR/provenance_transmute.rs:LL:CC | LL | let _val = *left_ptr; | ^^^^^^^^^ dereferencing pointer failed: $HEX[noalloc] is a dangling pointer (it has no provenance) | = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information = note: BACKTRACE: = note: inside `deref` at $DIR/provenance_transmute.rs:LL:CC note: inside `main` at $DIR/provenance_transmute.rs:LL:CC --> $DIR/provenance_transmute.rs:LL:CC | LL | deref(ptr1, ptr2.with_addr(ptr1.addr())); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace error: aborting due to previous error