[clang-tools-extra] [clang-tidy] introduce a unused local non trival variable check (PR #76101)

[Tyler Rockwood via cfe-commits]

================
@@ -0,0 +1,92 @@
+//===--- UnusedLocalNonTrivialVariableCheck.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 "UnusedLocalNonTrivialVariableCheck.h"
+#include "../utils/Matchers.h"
+#include "../utils/OptionsUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/ASTTypeTraits.h"
+#include "clang/AST/Type.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/ASTMatchers/ASTMatchersMacros.h"
+
+using namespace clang::ast_matchers;
+using namespace clang::tidy::matchers;
+
+namespace clang::tidy::bugprone {
+
+namespace {
+static constexpr StringRef DefaultIncludeTypeRegex =
+    "::std::.*mutex;::std::future;::std::basic_string;::std::basic_regex;"
+    "::std::base_istringstream;::std::base_stringstream;::std::bitset;"
+    "::std::path";
----------------
rockwotj wrote:

Yeah I don't use these APIs much, but good catch! I've fixed it.

https://github.com/llvm/llvm-project/pull/76101