From 0ee922123facae1a170257bf1d6c493f8fa9f29e Mon Sep 17 00:00:00 2001
From: Adam Perry <adam.n.perry@gmail.com>
Date: Thu, 16 Jan 2020 19:23:45 -0800
Subject: [PATCH] InstanceDef::requires_caller_location limited to items.

---
 src/librustc/ty/instance.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/librustc/ty/instance.rs b/src/librustc/ty/instance.rs
index 9be50d19a50..1ea695e40b2 100644
--- a/src/librustc/ty/instance.rs
+++ b/src/librustc/ty/instance.rs
@@ -141,7 +141,12 @@ impl<'tcx> InstanceDef<'tcx> {
     }
 
     pub fn requires_caller_location(&self, tcx: TyCtxt<'_>) -> bool {
-        tcx.codegen_fn_attrs(self.def_id()).flags.contains(CodegenFnAttrFlags::TRACK_CALLER)
+        match *self {
+            InstanceDef::Item(def_id) => {
+                tcx.codegen_fn_attrs(def_id).flags.contains(CodegenFnAttrFlags::TRACK_CALLER)
+            }
+            _ => false,
+        }
     }
 }