Reading Binary file into std::vector

Hello I am trying to write 8 bits from std::vector to binary file and read them back . Writing works fine , have checked with binary editor and all values are correct , but once I try to read I got bad data . Data that i am writing :

11000111 //bits

Data that i got from reading:

11111111 //bits

Read function :

std::vector<bool> Read()
{
    std::vector<bool> map;
    std::ifstream fin("test.bin", std::ios::binary);
    int size = 8 / 8.0f;
    char * buffer = new char[size];
    fin.read(buffer, size);
    fin.close();
    for (int i = 0; i < size; i++)
    {
        for (int id = 0; id < 8; id++)
        {
            map.emplace_back(buffer[i] << id);
        }
    }
    delete[] buffer;
    return map;
}