CSVReader fails with files bigger than 10 MB when constructed with std::ifstream

[lamorlette-cintoo]

I used to construct CVSReader with a std::ifstream as follows:

const std::filesystem::path file_path {"foo"};
std::ifstream input(file_path , std::ios::binary | std::ios::in);
csv::CSVReader path_reader {input};

It is working perfectly fine with relatively small files, but it throws an exception with files bigger than 10 MB.

I found out that the same files work perfectly fine when using the other CVSReader constructor, taking the filename as parameter:

const std::filesystem::path file_path {"foo"};
csv::CSVReader path_reader {file_path.string()};

(Unfortunately I can't share with you an example because I don't own them.)

[sjoubert]

Duplicate of #180

[vincentlaucsb]

Closing as duplicate of #180. While this is an issue, I am curious as to why people are simply not using the default memory-mapped CSVReader as recommended in the README.