diff -r 000000000000 -r 6474c204b198 other-licenses/7zstub/src/7zip/Archive/Common/OutStreamWithCRC.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/other-licenses/7zstub/src/7zip/Archive/Common/OutStreamWithCRC.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+// OutStreamWithCRC.cpp
+
+#include "StdAfx.h"
+
+#include "OutStreamWithCRC.h"
+
+STDMETHODIMP COutStreamWithCRC::Write(const void *data, 
+    UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessedSize;
+  HRESULT result;
+  if(!_stream)
+  {
+    realProcessedSize = size;
+    result = S_OK;
+  }
+  else
+    result = _stream->Write(data, size, &realProcessedSize);
+  _crc.Update(data, realProcessedSize);
+  if(processedSize != NULL)
+    *processedSize = realProcessedSize;
+  return result;
+}