From c4ec46c1954add1c8bb339f81dc185d69971ed25 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Sun, 31 Mar 2019 12:14:42 +0000
Subject: [PATCH] imgcodecs(sunras): avoid undefined shift

backporting of commit: f2803aba07c1c522b409cce5390e757f54d7794d
---
 modules/imgcodecs/src/grfmt_sunras.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/imgcodecs/src/grfmt_sunras.cpp b/modules/imgcodecs/src/grfmt_sunras.cpp
index 069566665a..487c99831a 100644
--- a/modules/imgcodecs/src/grfmt_sunras.cpp
+++ b/modules/imgcodecs/src/grfmt_sunras.cpp
@@ -90,7 +90,7 @@ bool  SunRasterDecoder::readHeader()
         m_width  = m_strm.getDWord();
         m_height = m_strm.getDWord();
         m_bpp    = m_strm.getDWord();
-        int palSize = 3*(1 << m_bpp);
+        int palSize = (m_bpp > 0 && m_bpp <= 8) ? (3*(1 << m_bpp)) : 0;
 
         m_strm.skip( 4 );
         m_encoding = (SunRasType)m_strm.getDWord();