From 0d0546a2364641d8ca9c840b70b437be038b8c9b Mon Sep 17 00:00:00 2001
From: Aaron Hill <aa1ronham@gmail.com>
Date: Thu, 6 Aug 2020 11:34:13 -0400
Subject: [PATCH] Add #[track_caller] to `Session::delay_span_bug`

This forwards the caller span to `Handler::delay_span_bug`
---
 src/librustc_session/session.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/librustc_session/session.rs b/src/librustc_session/session.rs
index e9077f40859..cf94ff8b929 100644
--- a/src/librustc_session/session.rs
+++ b/src/librustc_session/session.rs
@@ -432,6 +432,7 @@ pub fn opt_span_warn<S: Into<MultiSpan>>(&self, opt_sp: Option<S>, msg: &str) {
         }
     }
     /// Delay a span_bug() call until abort_if_errors()
+    #[track_caller]
     pub fn delay_span_bug<S: Into<MultiSpan>>(&self, sp: S, msg: &str) {
         self.diagnostic().delay_span_bug(sp, msg)
     }