From 6496d6943fbf152d54149797558dccb87434de31 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Mon, 17 Mar 2025 15:44:43 +1100
Subject: [PATCH] Make the `match` in `new_named_lifetime` exhaustive.

---
 compiler/rustc_ast_lowering/src/lib.rs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs
index 8997e4f11940..e24b45c5b194 100644
--- a/compiler/rustc_ast_lowering/src/lib.rs
+++ b/compiler/rustc_ast_lowering/src/lib.rs
@@ -1789,10 +1789,9 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
             LifetimeRes::Infer => hir::LifetimeName::Infer,
             LifetimeRes::Static { .. } => hir::LifetimeName::Static,
             LifetimeRes::Error => hir::LifetimeName::Error,
-            res => panic!(
-                "Unexpected lifetime resolution {:?} for {:?} at {:?}",
-                res, ident, ident.span
-            ),
+            LifetimeRes::ElidedAnchor { .. } => {
+                panic!("Unexpected `ElidedAnchar` {:?} at {:?}", ident, ident.span);
+            }
         };
 
         debug!(?res);