From fcc09cd914129efc6a2c1d82b9cc23ab36464954 Mon Sep 17 00:00:00 2001
From: Kris Rudolph <krisrudolph@gmail.com>
Date: Tue, 31 Mar 2020 22:52:24 -0700
Subject: [PATCH] Add fix for stacked bars
 https://github.com/danielgindi/Charts/pull/4029

---
 Source/Charts/Renderers/BarChartRenderer.swift | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/Charts/Renderers/BarChartRenderer.swift b/Source/Charts/Renderers/BarChartRenderer.swift
index 56a77fe0bf..2d15a9097a 100644
--- a/Source/Charts/Renderers/BarChartRenderer.swift
+++ b/Source/Charts/Renderers/BarChartRenderer.swift
@@ -831,8 +831,11 @@ open class BarChartRenderer: BarLineScatterCandleBubbleRenderer
                 stackLabel = nil
             }
 
+            //Handles empty array of yValues
+            let yValue = vals.isEmpty ? 0.0 : vals[idx % vals.count]
+
             elementValueText = dataSet.valueFormatter?.stringForValue(
-                vals[idx % stackSize],
+                yValue,
                 entry: e,
                 dataSetIndex: dataSetIndex,
                 viewPortHandler: viewPortHandler) ?? "\(e.y)"