fix for file size larger than C long max size

ccpem · Jul 13, 2024 · 3c9a668 · 3c9a668
1 parent bcf5c15
commit 3c9a668
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mrcfile/mrcmemmap.py b/mrcfile/mrcmemmap.py
@@ -114,7 +114,7 @@ def _read_data(self):
     def _open_memmap(self, dtype, shape):
         """Open a new memmap array pointing at the file's data block."""
         acc_mode = 'r' if self._read_only else 'r+'
-        header_nbytes = self.header.nbytes + self.header.nsymbt
+        header_nbytes = int(self.header.nbytes + self.header.nsymbt)
 
         self._iostream.flush()
         try: