From 53f7d00e6d50bc574b6418d833f45f182981c7e6 Mon Sep 17 00:00:00 2001
From: Roman Telezhynskyi <dismine@gmail.com>
Date: Tue, 27 Jul 2021 10:13:11 +0300
Subject: [PATCH] Fix crash when a grainline is empty.

---
 src/libs/vlayout/vlayoutpiece.cpp | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/libs/vlayout/vlayoutpiece.cpp b/src/libs/vlayout/vlayoutpiece.cpp
index fe93188c4..58f3092ab 100644
--- a/src/libs/vlayout/vlayoutpiece.cpp
+++ b/src/libs/vlayout/vlayoutpiece.cpp
@@ -1204,15 +1204,17 @@ void VLayoutPiece::DrawMiniature(QPainter &painter) const
         painter.drawPath(VPlaceLabelItem::LabelShapePath(label.shape));
     }
 
-    QPainterPath path;
-
     QVector<QPointF> gPoints = GetGrainline();
-    path.moveTo(gPoints.at(0));
-    for (auto p : qAsConst(gPoints))
+    if (not gPoints.isEmpty())
     {
-        path.lineTo(p);
+        QPainterPath path;
+        path.moveTo(gPoints.at(0));
+        for (auto p : qAsConst(gPoints))
+        {
+            path.lineTo(p);
+        }
+        painter.drawPath(path);
     }
-    painter.drawPath(path);
 }
 
 //---------------------------------------------------------------------------------------------------------------------