const fs = wx.getFileSystemManager();

const fd = fs.openSync({

  filePath: `${wx.env.USER_DATA_PATH}/hello.txt`,

  flag: 'r'

});

const tempBuffer = new ArrayBuffer(1024)

var readResult = fs.readSync({

  arrayBuffer: tempBuffer, 

  fd: fd, 

  length: 1024, 

  offset: 0, 

  position: 0

});

以上代码在ios高性能模式下报错：

readSync: fail array buffer does not exist?