| error[E0381]: used binding `x` is possibly-uninitialized |
| --> $DIR/borrowck-while.rs:4:12 |
| | |
| LL | let mut x: isize; |
| | ----- binding declared here but left uninitialized |
| LL | while 1 == 1 { x = 10; } |
| | ------ if this condition isn't met and the `while` loop runs 0 times, `x` is not initialized |
| LL | return x; |
| | ^ `x` used here but it is possibly-uninitialized |
| | |
| = note: when checking initialization, the compiler describes possible control-flow paths without evaluating whether branch conditions can actually have the values shown |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0381`. |
