- const sys::FileStatus *FileAStat = FileA.getFileStatus(false, Error);
- if (!FileAStat)
- return 2;
- const sys::FileStatus *FileBStat = FileB.getFileStatus(false, Error);
- if (!FileBStat)
- return 2;
-
- // Check for zero length files because some systems croak when you try to
- // mmap an empty file.
- size_t A_size = FileAStat->getSize();
- size_t B_size = FileBStat->getSize();
-
- // If they are both zero sized then they're the same
- if (A_size == 0 && B_size == 0)
- return 0;
-
- // If only one of them is zero sized then they can't be the same
- if ((A_size == 0 || B_size == 0)) {
- if (Error)
- *Error = "Files differ: one is zero-sized, the other isn't";
- return 1;
- }
-