From 1a2cab9b712682c08187af5a00d709f33df0ae1b Mon Sep 17 00:00:00 2001
From: Petr Bred <bredpetr@gmail.com>
Date: Wed, 1 Feb 2023 09:13:02 +0300
Subject: [PATCH] [clang compat] Remove unused llvm::Optional

Clang 125f4457a54a550846732763ee36b1447ec8d66e changed.
The LLVM project is migrating from llvm::Optional to std::optional.

We would previously see llvm::Optional via an indirect include:
    iwyu_preprocessor.h
      iwyu_output.h
        clang/AST/Decl.h
          clang/AST/APValue.h
            clang/Basic/LLVM.h

Since we don't use it, remove the using-declaration.

Signed-off-by: Petr Bred <bredpetr@gmail.com>
---
 iwyu_preprocessor.cc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/iwyu_preprocessor.cc b/iwyu_preprocessor.cc
index a129f05..a17d4ec 100644
--- a/iwyu_preprocessor.cc
+++ b/iwyu_preprocessor.cc
@@ -44,7 +44,6 @@ using clang::SourceLocation;
 using clang::SourceRange;
 using clang::Token;
 using llvm::errs;
-using llvm::Optional;
 using llvm::StringRef;
 using std::make_pair;
 using std::string;