From 4163ed68e2dd54a6654802a8a5a0dadb3bc6f69f Mon Sep 17 00:00:00 2001
From: Alex Lorenz <arphaman@gmail.com>
Date: Tue, 18 Apr 2017 09:59:27 +0000
Subject: [PATCH] [TableGen] Fix MSVC warning that occurs in TableGen generated
 function

This should fix the Windows buildbot failure that happened after r300539.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@300540 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/ClangAttrEmitter.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
index 6dc391122eb..7aa8bdc781e 100644
--- a/utils/TableGen/ClangAttrEmitter.cpp
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -3167,7 +3167,9 @@ emitAttributeMatchRules(PragmaClangAttributeSupport &PragmaAttributeSupport,
     }
     OS << ";\n";
   }
-  OS << "  }\n}\n\n";
+  OS << "  }\n";
+  OS << "  llvm_unreachable(\"Invalid match rule\");\n";
+  OS << "}\n\n";
 }
 
 static void GenerateDefaultLangOptRequirements(raw_ostream &OS) {
-- 
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