From 89120fa7ead9b2770f7ddc3912807e6e6bcca1f3 Mon Sep 17 00:00:00 2001
From: Ilya Kuznetsov <ilya@manticoresearch.com>
Date: Fri, 22 Nov 2024 19:31:10 +0100
Subject: [PATCH] fixed bitmap inversion

---
 util/bitvec.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/util/bitvec.h b/util/bitvec.h
index 7a67b6c4..29716ff1 100644
--- a/util/bitvec.h
+++ b/util/bitvec.h
@@ -49,11 +49,14 @@ class BitVec_T
 
 	void Invert ( int iMinBit=-1, int iMaxBit=-1 )
 	{
+		if ( !m_iSize )
+			return;
+
 		if ( iMinBit<0 )
 			iMinBit = 0;
 
 		if ( iMaxBit<0 )
-			iMaxBit = m_iSize;
+			iMaxBit = m_iSize-1;
 
 		int iMinId = iMinBit>>SHIFT;
 		int iMaxId = (iMaxBit+SIZEBITS)>>SHIFT;