From ee1b8184afafd90af944a3019fca55b726f3e251 Mon Sep 17 00:00:00 2001
From: Frederik Hennig <frederik.hennig@fau.de>
Date: Wed, 26 Mar 2025 10:49:59 +0100
Subject: [PATCH] Fix VTK Base64Writer

---
 src/vtk/Base64Writer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vtk/Base64Writer.h b/src/vtk/Base64Writer.h
index 1445da4a6..a61901559 100644
--- a/src/vtk/Base64Writer.h
+++ b/src/vtk/Base64Writer.h
@@ -75,7 +75,7 @@ public:
    void toStream( std::ostream& os );
 
 private:
-   void encodeblock( const std::array< unsigned char, 3 > in,  std::array< unsigned char, 4 > out, int len )
+   void encodeblock( const std::array< unsigned char, 3 > in,  std::array< unsigned char, 4 > & out, int len )
    {
       std::array< unsigned char, 65 > cb64 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" };
 
-- 
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