From 2ca47c465924c4f9967bbc3938b3f44ef9bf6f41 Mon Sep 17 00:00:00 2001
From: Artem Zhidkov <Artem.Zhidkov@opencascade.com>
Date: Tue, 30 Jun 2020 14:02:16 +0300
Subject: [PATCH] Task #3230: Sketcher: create a curve passing through selected
 points or vertices of a polyline

Fix crash on reordering the list of points.
---
 src/GeomAlgoAPI/GeomAlgoAPI_CurveBuilder.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/GeomAlgoAPI/GeomAlgoAPI_CurveBuilder.cpp b/src/GeomAlgoAPI/GeomAlgoAPI_CurveBuilder.cpp
index fd98f26af..ab6499bf8 100644
--- a/src/GeomAlgoAPI/GeomAlgoAPI_CurveBuilder.cpp
+++ b/src/GeomAlgoAPI/GeomAlgoAPI_CurveBuilder.cpp
@@ -186,6 +186,8 @@ void GeomAlgoAPI_CurveBuilder::reorderPoints(std::list<GeomPointPtr>& thePoints)
         // remove duplicates
         std::list<GeomPointPtr>::iterator aRemoveIt = aNextIt++;
         thePoints.erase(aRemoveIt);
+        // update iterator showing the nearest point, because it may become invalid
+        aNearestIt = aPIt; ++aNearestIt;
         continue;
       }
       if (aDist < aMinDist && (aMinDist - aDist) > Precision::Confusion()) {
-- 
2.39.2