From b92ec6a78a980b567ec8e6c034e3b37caea81aaa Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Tue, 13 Jan 2015 14:01:27 -0500
Subject: [PATCH] Fix Repr output so that it does not ICE when a self-type is
 absent. This occurs while printing object type projections for debugging
 (note that the `UserString` impl is much more careful about this).

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

diff --git a/src/librustc/util/ppaux.rs b/src/librustc/util/ppaux.rs
index 559ec533baa9..c3b6c2178ee0 100644
--- a/src/librustc/util/ppaux.rs
+++ b/src/librustc/util/ppaux.rs
@@ -1430,7 +1430,7 @@ impl<'tcx> UserString<'tcx> for ty::ProjectionPredicate<'tcx> {
 impl<'tcx> Repr<'tcx> for ty::ProjectionTy<'tcx> {
     fn repr(&self, tcx: &ctxt<'tcx>) -> String {
         format!("<{} as {}>::{}",
-                self.trait_ref.self_ty().repr(tcx),
+                self.trait_ref.substs.self_ty().repr(tcx),
                 self.trait_ref.repr(tcx),
                 self.item_name.repr(tcx))
     }