================
@@ -0,0 +1,44 @@
+//===--- BitwisePointerCastCheck.cpp - clang-tidy 
-------------------------===//
+//
+// 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 "BitwisePointerCastCheck.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang::tidy::bugprone {
+
+void BitwisePointerCastCheck::registerMatchers(MatchFinder *Finder) {
+  auto IsPointerType = refersToType(qualType(isAnyPointer()));
+  Finder->addMatcher(callExpr(hasDeclaration(functionDecl(allOf(
+                                  hasName("::std::bit_cast"),
+                                  hasTemplateArgument(0, IsPointerType),
+                                  hasTemplateArgument(1, IsPointerType)))))
+                         .bind("bit_cast"),
+                     this);
----------------
5chmidti wrote:

`std::bit_cast` only exists in C++20>=, so this matcher can be moved behind a 
condition

https://github.com/llvm/llvm-project/pull/108083
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