[WIP] fix(cstdlib/mblen): 追加修正 #1541
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⚡ プレビュー (HTML) (更新時刻: 2025-12-03 23:41:42 JST) 変更記事一覧1件の記事が変更されました。 ※ソース (.md) に直接変更のあった記事を列挙しています。グローバル修飾や変換規則の変更による変化は考慮していません。 |
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mblen のシフト状態に関する記述が巷の記述とC規格の記述で違うと思ったら、POSIX.1-2017 規格 (前回のシフト状態を使う) までは C 規格と違う記述になっていて、その後 POSIX.1-2024 (毎回シフト状態をクリアする) で C 規格に一致する様に改められたみたいです。一方で GNU/Linux は POSIX.1-2017 の振る舞い で、今後も C/POSIX に従うつもりはないんだろうな…という状況です。 |
* std::mblen の内部状態をクリアせずに使用しているのを修正 * size_t に対する std::size_t のつけ忘れを修正 * nullptr を指定した時の戻り値の記述を修正 * 関連するロカールカテゴリを明記
Raclamusi
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Dec 3, 2025
| #include <cstdlib> | ||
| #include <clocale> | ||
| int main() { |
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std::strlen のために #include <cstring> が必要です（2つ目のサンプルコードでも同様）。
残り MB_CUR_MAX バイトが読み取れることが保証されていないと未定義動作 Co-authored-by: Raclamusi <61970673+Raclamusi@users.noreply.github.com>
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変換結果確認用