Function rustc_typeck::check::upvar::restrict_capture_precision

fn restrict_capture_precision<'tcx>(
    place: Place<'tcx>, 
    curr_mode: UpvarCapture<'tcx>
) -> (Place<'tcx>, UpvarCapture<'tcx>)

Truncate projections so that following rules are obeyed by the captured place:

• No Index projections are captured, since arrays are captured completely.
• No unsafe block is required to capture place Returns the truncated place and updated cature mode.