[clang-tools-extra] Adding an initial version of the "Initialized Class Members" checker. (PR #65189)

[via cfe-commits]

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@@ -0,0 +1,51 @@
+//===--- CppInitClassMembersCheck.h - clang-tidy ----------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_CPPINITCLASSMEMBERSCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_GOOGLE_CPPINITCLASSMEMBERSCHECK_H
+
+#include "../ClangTidyCheck.h"
+
+namespace clang::tidy::google {
+
+/// Checks that class members are initialized in constructors (implicitly or
+/// explicitly). Reports constructors or classes where class members are not
+/// initialized. The goal of this checker is to eliminate UUM (Use of
+/// Uninitialized Memory) bugs caused by uninitialized class members.
+///
+/// This checker is different from ProTypeMemberInitCheck in that this checker
+/// attempts to eliminate UUMs as a bug class, at the expense of false
+/// positives.
+///
+/// This checker is WIP. We are incrementally adding features and increasing
+/// coverage until we get to a shape that is acceptable.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/google/cpp-init-class-members.html
+class CppInitClassMembersCheck : public ClangTidyCheck {
+public:
+  CppInitClassMembersCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
+    return LangOpts.CPlusPlus && !LangOpts.ObjC;
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EugeneZelenko wrote:

`LangOpts.CPlusPlus` should be enough.

https://github.com/llvm/llvm-project/pull/65189