A few weeks back I was using std::ifstream to read in some files and it was failing immediately on open because the file was larger than 4GB. At the time I couldnt find a decent answer as to why it was limited to 32 bit files sizes, so I wrote my own using native OS API.A few weeks back I was using std::ifstream to r
阅读背景：
使用c ++ stl读取大于4GB的文件
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