It is possible for a stream to have both small block and big block

chain as NULL.

It is possible for a stream to have both small block and big block
71b327f1 · Thuy Nguyen · Alexandre Julliard · 79a3f800 · 71b327f1
Commit 71b327f1 authored Jul 10, 1999 by Thuy Nguyen Committed by Alexandre Julliard Jul 10, 1999
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stg_stream.c ole/stg_stream.c +9 -1

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--- a/ole/stg_stream.c
+++ b/ole/stg_stream.c
@@ -356,7 +356,15 @@ HRESULT WINAPI StgStreamImpl_Read(
 			    pcbRead);
  }
  else
-    assert(FALSE);
+  {
+    /*
+     * Small and big block chains are both NULL. This case will happen
+     * when a stream starts with BLOCK_END_OF_CHAIN and has size zero.
+     */
+
+    *pcbRead = 0;
+    return S_OK;
+  }

  /*
   * We should always be able to read the proper amount of data from the