From aabfa4fe382972b0f72568c93e2467bda91e4432 Mon Sep 17 00:00:00 2001
From: ptv <ptv@opencascade.com>
Date: Mon, 3 Jul 2006 07:47:19 +0000
Subject: [PATCH] During remove node from STL map, please take about iterator.
 Problem noticed under Rational Purify

---
 src/SMDS/SMDS_VolumeTool.cxx | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/SMDS/SMDS_VolumeTool.cxx b/src/SMDS/SMDS_VolumeTool.cxx
index 7ee1f81f2..66185f0bf 100644
--- a/src/SMDS/SMDS_VolumeTool.cxx
+++ b/src/SMDS/SMDS_VolumeTool.cxx
@@ -1266,17 +1266,22 @@ bool SMDS_VolumeTool::IsFreeFace( int faceIndex )
   if ( IsFaceExternal( faceIndex ))
     intNormal = XYZ( -intNormal.x, -intNormal.y, -intNormal.z );
   XYZ p0 ( nodes[0] ), baryCenter;
-  for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); vNbIt++ ) {
+  for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); ) {
     int nbShared = (*vNbIt).second;
     if ( nbShared >= 3 ) {
       SMDS_VolumeTool volume( (*vNbIt).first );
       volume.GetBaryCenter( baryCenter.x, baryCenter.y, baryCenter.z );
       XYZ intNormal2( baryCenter - p0 );
       if ( intNormal.Dot( intNormal2 ) < 0 )
+      {
+        vNbIt++;
         continue; // opposite side
+      }
     }
     // remove a volume from volNbShared map
-    volNbShared.erase( vNbIt );
+    TElemIntMap::iterator vErIt = vNbIt;
+    vNbIt++;
+    volNbShared.erase( vErIt );
   }
 
   // here volNbShared contains only volumes laying on the