From 6af2d3cc90f7625ad3db4687a93abebfa9e8396a Mon Sep 17 00:00:00 2001
From: Oli Scherer <git-spam-no-reply9815368754983@oli-obk.de>
Date: Thu, 8 Feb 2024 14:44:52 +0000
Subject: [PATCH] Fix `span_bug!` backtraces

---
 compiler/rustc_errors/src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs
index 9c5a91adfa091..b6f8dab7e1a22 100644
--- a/compiler/rustc_errors/src/lib.rs
+++ b/compiler/rustc_errors/src/lib.rs
@@ -847,6 +847,7 @@ impl DiagCtxt {
         self.struct_span_warn(span, msg).emit()
     }
 
+    #[track_caller]
     pub fn span_bug(&self, span: impl Into<MultiSpan>, msg: impl Into<DiagnosticMessage>) -> ! {
         self.struct_span_bug(span, msg).emit()
     }