{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"LiveNodeKind::ExprNode(succ_span,"}]}
            LiveNodeKind::ExprNode(succ_span, succ_id) => {
        match self.ir.lnks[succ] {
                self.warn_about_unreachable(expr.span, ty, succ_span, succ_id, "expression");