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#include "stdioint.h"
off_t ftell(FILE *file)
{
struct _IO_file_pvt *f = stdio_pvt(file);
off_t pos = lseek(f->pub._IO_fileno, 0, SEEK_CUR);
if (pos >= 0)
pos += (int)f->obytes - (int)f->ibytes;
return pos;
}
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