From 0c1033a08eff36699d4ec1e8eea76a7d8b621cdf Mon Sep 17 00:00:00 2001
From: Michael Stahl <Michael.Stahl@cib.de>
Date: Tue, 8 Oct 2019 16:23:31 +0200
Subject: tools: don't leave SvStream::m_nBufFilePos pointing beyond the end

... of the stream in SvStream::SetStreamSize(); this caused
SvMemoryStream with SetStreamSize(0) and subsequent write to be
pre-filled with 0 bytes.

Change-Id: I0de704b319f5087bc6c1914881e38018212afbf2
Reviewed-on: https://gerrit.libreoffice.org/80478
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@cib.de>
---
 tools/source/stream/stream.cxx | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'tools')

diff --git a/tools/source/stream/stream.cxx b/tools/source/stream/stream.cxx
index a793446ce738..713d36504b6f 100644
--- a/tools/source/stream/stream.cxx
+++ b/tools/source/stream/stream.cxx
@@ -1561,6 +1561,10 @@ bool SvStream::SetStreamSize(sal_uInt64 const nSize)
     sal_uInt16 nBuf = m_nBufSize;
     SetBufferSize( 0 );
     SetSize( nSize );
+    if (nSize < m_nBufFilePos)
+    {
+        m_nBufFilePos = nSize;
+    }
     SetBufferSize( nBuf );
 #ifdef DBG_UTIL
     DBG_ASSERT(Tell()==nFPos,"SetStreamSize failed");
-- 
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