error: Undefined Behavior: constructing invalid value at [0]: encountered uninitialized memory, but expected a unicode scalar value --> $DIR/invalid_char_uninit.rs:LL:CC | LL | let _b = unsafe { MyUninit { init: () }.uninit }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at [0]: encountered uninitialized memory, but expected a unicode scalar value | = 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 `main` at $DIR/invalid_char_uninit.rs:LL:CC note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace error: aborting due to previous error