From 752c9e02e6aa8ced24e9b53097cb42540d5e6a08 Mon Sep 17 00:00:00 2001
From: azv <azv@opencascade.com>
Date: Thu, 24 Dec 2015 18:24:36 +0300
Subject: [PATCH] Fix for issue #1174

---
 .../SolveSpaceSolver/SolveSpaceSolver_Storage.cpp          | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/SketchSolver/SolveSpaceSolver/SolveSpaceSolver_Storage.cpp b/src/SketchSolver/SolveSpaceSolver/SolveSpaceSolver_Storage.cpp
index 51699b90f..e2cd45ad5 100644
--- a/src/SketchSolver/SolveSpaceSolver/SolveSpaceSolver_Storage.cpp
+++ b/src/SketchSolver/SolveSpaceSolver/SolveSpaceSolver_Storage.cpp
@@ -391,6 +391,13 @@ void SolveSpaceSolver_Storage::replaceInConstraints(
 
       std::shared_ptr<SolveSpaceSolver_ConstraintWrapper> aWrapper =
           std::dynamic_pointer_cast<SolveSpaceSolver_ConstraintWrapper>(*aCIt);
+      if (theSource->id() == theDest->id()) {
+        // No need to update SolveSpace constraint if the entities are the same
+        aWrapper->changeConstraint() = getConstraint((Slvs_hConstraint)aWrapper->id());
+        aWrapper->setEntities(aSubs);
+        continue;
+      }
+
       // change constraint entities
       Slvs_Constraint aConstr = aWrapper->constraint();
       if (aConstr.ptA == (Slvs_hEntity)theSource->id())
-- 
2.39.2