https://github.com/boomanaiden154 created 
https://github.com/llvm/llvm-project/pull/196445

LookupSucceeded is only used in an assertion. Mark it [[maybe_unused]]
so we do not get -Wunused-variable in non-assertions builds.

>From 2e5bf1e0eeab867a3dbe7c6a8ec58581c1d365ad Mon Sep 17 00:00:00 2001
From: Aiden Grossman <[email protected]>
Date: Thu, 7 May 2026 22:59:26 +0000
Subject: [PATCH] [Clang][HLSL] Fix -Wunused-variable

LookupSucceeded is only used in an assertion. Mark it [[maybe_unused]]
so we do not get -Wunused-variable in non-assertions builds.
---
 clang/lib/Sema/SemaHLSL.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 717dfdcb36048..594a18f0b8c78 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -3188,7 +3188,8 @@ NamedDecl 
*SemaHLSL::getConstantBufferConversionFunction(QualType Type,
           CanQualType::CreateUnsafe(ReturnTy));
   LookupResult ConvR(SemaRef, ConvName, SourceLocation(),
                      Sema::LookupOrdinaryName);
-  bool LookupSucceeded = SemaRef.LookupQualifiedName(ConvR, RD);
+  [[maybe_unused]] bool LookupSucceeded =
+      SemaRef.LookupQualifiedName(ConvR, RD);
   assert(LookupSucceeded);
 
   for (NamedDecl *D : ConvR) {

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