================
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "RedundantConstCheck.h"
+#include "../utils/LexerUtils.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include <optional>
+
+using namespace clang::ast_matchers;
+
+namespace clang::tidy::readability {
+
+static std::optional<Token>
+findConstToRemove(const VarDecl *VD, const MatchFinder::MatchResult &Result) {
+ const SourceManager &SM = *Result.SourceManager;
+
+ const SourceLocation NameBeginLoc = VD->getQualifier()
+ ? VD->getQualifierLoc().getBeginLoc()
+ : VD->getLocation();
+
+ const bool IsPointer =
+ VD->getType()->isPointerType() || VD->getType()->isMemberPointerType();
+
+ // If the 'findPreviousTokenKind' below fails,
+ // we know it is a pointer but cannot find the start token.
+ // This can happen when either type is aliased or `auto` was used.
+ // e.g: constexpr const auto const str = "hello";
+ // In cases like this, Clang already warns about the use of const
+ // as duplicate, so we can safely ignore these cases.
+ const SourceLocation ConstSearchStartLoc =
+ !IsPointer
+ ? VD->getBeginLoc()
+ : utils::lexer::findPreviousTokenKind(
+ NameBeginLoc, SM, Result.Context->getLangOpts(), tok::star);
----------------
unterumarmung wrote:
```suggestion
IsPointer
? utils::lexer::findPreviousTokenKind(
NameBeginLoc, SM, Result.Context->getLangOpts(), tok::star)
: VD->getBeginLoc();
```
maybe?
https://github.com/llvm/llvm-project/pull/189733
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