From 2e63bb34199545042c049f67be3e3253520a85fc Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Wed, 22 Nov 2017 16:52:29 -0500
Subject: [PATCH] fix debruijn account in `for_each_free_region`

---
 src/librustc/ty/fold.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc/ty/fold.rs b/src/librustc/ty/fold.rs
index fbbc0e92bcd..069dc0275cb 100644
--- a/src/librustc/ty/fold.rs
+++ b/src/librustc/ty/fold.rs
@@ -247,7 +247,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
 
             fn visit_region(&mut self, r: ty::Region<'tcx>) -> bool {
                 match *r {
-                    ty::ReLateBound(debruijn, _) if debruijn.depth < self.current_depth => {
+                    ty::ReLateBound(debruijn, _) if debruijn.depth <= self.current_depth => {
                         /* ignore bound regions */
                     }
                     _ => (self.callback)(r),