diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zSpecStream.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zSpecStream.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,24 @@
+// 7zSpecStream.cpp
+
+#include "StdAfx.h"
+
+#include "7zSpecStream.h"
+
+STDMETHODIMP CSequentialInStreamSizeCount2::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+  UInt32 realProcessedSize;
+  HRESULT result = _stream->Read(data, size, &realProcessedSize);
+  _size += realProcessedSize;
+  if (processedSize != 0)
+    *processedSize = realProcessedSize;
+  return result; 
+}
+
+STDMETHODIMP CSequentialInStreamSizeCount2::GetSubStreamSize(
+    UInt64 subStream, UInt64 *value)
+{
+  if (_getSubStreamSize == NULL)
+    return E_NOTIMPL;
+  return  _getSubStreamSize->GetSubStreamSize(subStream, value);
+}
+