-// Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
m++;
}
- int mFirst = mOnVertex.front(), mLast = m - 1;
+ int mFirst = 0, mLast = 0;
+ if (!mOnVertex.empty()) {
+ mFirst = mOnVertex.front();
+ mLast = m - 1;
+ }
list< int >::iterator mIt = mOnVertex.begin();
for ( ; mIt != mOnVertex.end(); ++mIt)
{