if len(name) == 0 {
			// Can't have empty filenames, and having a unique
			// filename is quite useful for debugging.
			name = fmt.Sprintf("<missing>_%d", i)
		}
		// Note the use of "path" here and not "filepath". The compiler
		// hard-codes to use "/" in DWARF paths (even for Windows), so we
		// want to maintain that here.
		file := path.Base(name)
		dir := path.Dir(name)
		dirIdx, ok := dirNums[dir]

//sys	GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) = kernel32.GetShortPathNameW
//sys	GetFinalPathNameByHandle(file Handle, filePath *uint16, filePathSize uint32, flags uint32) (n uint32, err error) = kernel32.GetFinalPathNameByHandleW