Question

I have the following code which I have been using on a 188 byte file:

std::ifstream is("filename", std::ios::binary);

std::vector<uint8_t> buffer;
std::istream_iterator<uint8_t> i_input(is);
std::copy(i_input, std::istream_iterator<uint8_t>(),
          std::back_inserter(buffer));

std::cout << buffer.size();

However it is only reading 186 bytes of the 188 bytes.

I have confirmed the file size in a hexeditor as well as with ls -al.

Answer 1

I don’t know why, but by default that seems to skip whitespace. You need to disable that with noskipws:

is >> std::noskipws;