From 6d87f9a526e29da83e307d0e1ffe3b5bdb262091 Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Tue, 11 May 2021 16:51:23 +0200
Subject: [PATCH] Tell code-checker drawPolygon can't be called with negative
 count

Change-Id: I082ab823ca039d1d611bfdab6b69e3650d724844
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
---
 src/gui/painting/qpaintengineex.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gui/painting/qpaintengineex.cpp b/src/gui/painting/qpaintengineex.cpp
index d752c01f6a..2997d53310 100644
--- a/src/gui/painting/qpaintengineex.cpp
+++ b/src/gui/painting/qpaintengineex.cpp
@@ -938,6 +938,7 @@ void QPaintEngineEx::drawPoints(const QPoint *points, int pointCount)
 
 void QPaintEngineEx::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
 {
+    Q_ASSUME(pointCount >= 2);
     QVectorPath path((const qreal *) points, pointCount, nullptr, QVectorPath::polygonFlags(mode));
 
     if (mode == PolylineMode)
@@ -948,6 +949,7 @@ void QPaintEngineEx::drawPolygon(const QPointF *points, int pointCount, PolygonD
 
 void QPaintEngineEx::drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode)
 {
+    Q_ASSUME(pointCount >= 2);
     int count = pointCount<<1;
     QVarLengthArray<qreal> pts(count);