fix(cxx): Always add int64 suffix to int64 literals

[riantkb]

#202

Summary

• int64 の定数リテラルに対し、その定数が int32 の範囲でも接尾辞 ll を付加するように変更した

Tests

• この変更により、abc186_d を AC するコードを出力するようになったことを確認した
  • https://atcoder.jp/contests/abc186/submissions/25500207

[kmyk]

@riantkb ありがとう。コードの修正はよさそうです。しかし test/Jikka/CPlusPlus/FormatSpec.hs の単体テストが落ちてて merge できないのでこれも更新してほしい (バグを直すと落ちるようなテストで申し訳ない……)

Failures:

  test/Jikka/CPlusPlus/FormatSpec.hs:45:7: 
  1) Jikka.CPlusPlus.Format.run works
       expected: ["int64_t solve(int32_t n) {","    int64_t x = 0;","    for (int32_t i = 0; i < n; ++ i) {","        x += int64_t(i);","    }","    return x;","}"]
        but got: ["int64_t solve(int32_t n) {","    int64_t x = 0ll;","    for (int32_t i = 0; i < n; ++ i) {","        x += int64_t(i);","    }","    return x;","}"]

  To rerun use: --match "/Jikka.CPlusPlus.Format/run/works/"

  test/Jikka/CPlusPlus/FormatSpec.hs:75:7: 
  2) Jikka.CPlusPlus.Format, no unnecessary paren in index, works
       expected: ["int64_t solve(int32_t n, std::vector<int64_t> h) {","    int64_t x = 0;","    for (int32_t i = 2; i < n; ++ i) {","        x += h[i - 2];","    }","    return x;","}"]
        but got: ["int64_t solve(int32_t n, std::vector<int64_t> h) {","    int64_t x = 0ll;","    for (int32_t i = 2; i < n; ++ i) {","        x += h[i - 2];","    }","    return x;","}"]

  To rerun use: --match "/Jikka.CPlusPlus.Format/no unnecessary paren in index/works/"

[riantkb]

修正しました 🙇🙇🙇

[kmyk]

ありがとう。merge しました