From 037fdb8213da90f3fe26f78b1e415b86f59b0185 Mon Sep 17 00:00:00 2001
From: Philipp Hansch <dev@phansch.net>
Date: Wed, 30 Jan 2019 07:30:39 +0100
Subject: [PATCH] Improve bug message in check_ty

This branch was hit in Clippy and I think it would be nice to
show the thing that was unexpected in the bug message.

It's also in line with the other `bug!` messages in `check_ty`.
---
 src/librustc_typeck/collect.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/librustc_typeck/collect.rs b/src/librustc_typeck/collect.rs
index ade84faae8dbd..120467cbd13a0 100644
--- a/src/librustc_typeck/collect.rs
+++ b/src/librustc_typeck/collect.rs
@@ -1303,12 +1303,12 @@ fn type_of<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>, def_id: DefId) -> Ty<'tcx> {
             }
         },
 
-        Node::GenericParam(param) => match param.kind {
+        Node::GenericParam(param) => match &param.kind {
             hir::GenericParamKind::Type {
                 default: Some(ref ty),
                 ..
             } => icx.to_ty(ty),
-            _ => bug!("unexpected non-type NodeGenericParam"),
+            x => bug!("unexpected non-type Node::GenericParam: {:?}", x),
         },
 
         x => {