QT4项目用QT5打开出现错误

头文件中 ::std::ifstream file;
void writeBytesFromFloat(::std::ofstream& file, float);
报错位置

//位置1
     if(stats.type == BINARY)
        {
            file.seekg(0, ::std::ios::beg);//基地址为文件开始处，偏移地址为0，于是指针定位在文件开始处
            // Test if the STL file has the right size
            if((fileSize - HEADER_SIZE) % SIZE_OF_FACET != 0)
            {
                ::std::cerr << "The file " << file << " has a wrong size."
                            << ::std::endl;
                throw wrong_header_size();
            }
//位置2
    else
    {
       ::std::cerr << "The file " << file << " could not be found." << ::std::endl;
        throw error_opening_file();
    }

错误
error: no match for 'operator<<' (operand types are 'std::basic_ostream' and 'std::ifstream {aka std::basic_ifstream}')
::std::cerr << "The file " << file << " has a wrong size."
error: cannot bind 'std::basic_ostream' lvalue to 'std::basic_ostream&&'
::std::cerr << "The file " << file << " has a wrong size."

求佬大帮忙解决，真的感谢
^
^