From ce276b7a6448d9c30f55235392c38b0416e91bbb Mon Sep 17 00:00:00 2001
From: Aaron Ballman <aaron@aaronballman.com>
Date: Thu, 27 May 2021 09:23:20 -0400
Subject: [PATCH] Fix -Wswitch warning; NFC

---
 clang/lib/Lex/PPDirectives.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp
index 1ccf24c6f767..8fe70668a406 100644
--- a/clang/lib/Lex/PPDirectives.cpp
+++ b/clang/lib/Lex/PPDirectives.cpp
@@ -3259,6 +3259,9 @@ void Preprocessor::HandleElifFamilyDirective(Token &ElifToken,
     case tok::pp_elifndef:
       Callbacks->Elifndef(ElifToken.getLocation(), ConditionRange, CI.IfLoc);
       break;
+    default:
+      assert(false && "unexpected directive kind");
+      break;
     }
   }