//! Most of the documentation on regions can be found in
//! `middle/typeck/infer/region_inference.rs`
+use ast_map;
use session::Session;
use middle::ty::{self, Ty};
use util::nodemap::{FnvHashMap, FnvHashSet, NodeMap};
use syntax::{ast, visit};
use syntax::ast::{Block, Item, FnDecl, NodeId, Arm, Pat, Stmt, Expr, Local};
use syntax::ast_util::stmt_id;
-use syntax::ast_map;
use syntax::ptr::P;
use syntax::visit::{Visitor, FnKind};