From 18f09c8e7656dcd847ad66f2816aaa4aa06d7a09 Mon Sep 17 00:00:00 2001
From: harry <hrosen2016@gmail.com>
Date: Thu, 9 Feb 2023 20:06:18 -0500
Subject: [PATCH] Fix for UBSAN left shift of negative number error in
 SexyFilter2

---
 src/filter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/filter.cpp b/src/filter.cpp
index d1e13ac6..650f8c43 100644
--- a/src/filter.cpp
+++ b/src/filter.cpp
@@ -37,7 +37,7 @@ void SexyFilter2(int32 *in, int32 count)
  while(count--)
  {
   int64 dropcurrent;
-  dropcurrent=((*in<<16)-acc)>>3;
+  dropcurrent=( int32(uint32(*in)<<16)-acc)>>3;
 
   acc+=dropcurrent;
   *in=acc>>16;