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VSCodeでbits/stdc++.hが認識されないときの対処法(競プロ)

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概要

VSCodeでC++のAtCoder環境を整備していたときに、bits/stdc++.hが認識されなかったときの対処法のメモ。

環境

Windows10
Visual Studio Codeで競プロ環境構築(導入編)で環境構築。

状況

以前にVisual Studio Codeで競プロ環境構築(導入編)で環境構築を行ったが、久しぶりにVSCodeを開いてみたところ、#include <bits/stdc++.h>で「IncludePathを更新してください」と怒られた。コンパイルは通るのでGCCではなく、VSCode側の問題のようだ。

##解決方法

c_cpp_properties.jsonのIncludePathにbitsのパスを追加。

  • 「Ctrl + Shift + P」でコマンドパレットを開く。
  • 「C/Cpp: Edit configurations...」を選択。
  • includePathにbitsのパスを追加。
c_cppproperties.json
"includePath": [
    "${workspaceFolder}/**",
    "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/include/bits/*" // この行を追加
],

※「.vscode」フォルダの中に 「c_cpp_properties.json」ファイルが作成される。
「.vscode」というフォルダが無い場合は、プロジェクトフォルダ直下に自動で作成される。

bitsのパスに「stdc++.h」ファイルを追加。

stdc++.hの内容はここから。

stdc++.h
// C++ includes used for precompiling -*- C++ -*-

// Copyright (C) 2003-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file stdc++.h
 *  This is an implementation file for a precompiled header.
 */

// 17.4.1.2 Headers

// C
#ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#endif
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>

#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#endif

// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>

#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif

まとめ

該当部分の波線エラーを消すことができた。
そもそも何で波線エラーがでてしまったのかは不明のまま。

参考

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