From 9c726ed28711c19e65499665ca240e1f9d5004a0 Mon Sep 17 00:00:00 2001
From: Axel Spoerl <axel.spoerl@qt.io>
Date: Fri, 15 Nov 2024 08:45:46 +0100
Subject: [PATCH] QProgressBar: Prevent division by zero

Prevent division, if totalSteps is zero.
This amends 913b98d4120b56487a14eb96b5e5252fdd939603.

Task-number: QTBUG-45048
Change-Id: I1456f8c2f81becaf9b15a2d3ba80d01974a45b25
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 95ee3910111b5ac3e083a05c79125f128e247883)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/widgets/widgets/qprogressbar.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/widgets/widgets/qprogressbar.cpp b/src/widgets/widgets/qprogressbar.cpp
index c685ef2b634..a905db61fd7 100644
--- a/src/widgets/widgets/qprogressbar.cpp
+++ b/src/widgets/widgets/qprogressbar.cpp
@@ -118,8 +118,9 @@ bool QProgressBarPrivate::repaintRequired() const
 
     const int totalSteps = maximum - minimum;
 
-    const int currentPercentage = (value - minimum) * 100 / totalSteps;
-    const int lastPaintedPercentage = (lastPaintedValue - minimum) * 100 / totalSteps;
+    const int currentPercentage = totalSteps ? (value - minimum) * 100 / totalSteps : 0;
+    const int lastPaintedPercentage = totalSteps ? (lastPaintedValue - minimum) * 100 / totalSteps
+                                                 : 0;
 
     const int percentageChangeConstant = 1;
     const bool percentageChanged = (qAbs(currentPercentage - lastPaintedPercentage) >= percentageChangeConstant);