Function rustc_mir_build::thir::cx::expr::capture_upvar

fn capture_upvar<'tcx>(
    cx: &mut Cx<'_, 'tcx>, 
    closure_expr: &'tcx Expr<'tcx>, 
    var_hir_id: HirId, 
    upvar_ty: Ty<'tcx>
) -> ExprRef<'tcx>