View Compilation Error

0_0_30817745_31152.cpp: In member function 'void fistream::stack_buffer()':
0_0_30817745_31152.cpp:49:25: error: 'struct fistream::buffer' has no member named 'i'
   memcpy(ibuf_stk.top().i
                         ^
0_0_30817745_31152.cpp:49:25: error: expected '}' at end of input
0_0_30817745_31152.cpp:49:25: error: expected '}' at end of input