gnu: cgal: Update to 5.2.1.

* gnu/packages/graphics.scm (cgal): Update to 5.2.1.
[source]: Remove patch.
* gnu/packages/patches/cgal-security-pr-5371.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

3 files changed, 2 insertions, 1616 deletions

diff --git a/gnu/local.mk b/gnu/local.mk
index 3d4147a879..5c5555069e 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -887,7 +887,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/cdparanoia-fpic.patch			\
   %D%/packages/patches/cdrtools-3.01-mkisofs-isoinfo.patch 	\
   %D%/packages/patches/ceph-disable-cpu-optimizations.patch	\
-  %D%/packages/patches/cgal-security-pr-5371.patch		\
   %D%/packages/patches/chmlib-inttypes.patch			\
   %D%/packages/patches/cl-asdf-config-directories.patch		\
   %D%/packages/patches/clamav-config-llvm-libs.patch		\
diff --git a/gnu/packages/graphics.scm b/gnu/packages/graphics.scm
index db04b93f20..4a301d387a 100644
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -718,7 +718,7 @@ more.")
 (define-public cgal
   (package
     (name "cgal")
-    (version "5.2")
+    (version "5.2.1")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -726,9 +726,7 @@ more.")
                     "/CGAL-" version ".tar.xz"))
               (sha256
                (base32
-                "08sr2k2dm4zasfbvisqpvs6djqw3rywzwpzr701an870nvnqck3l"))
-              (patches (search-patches "cgal-security-pr-5371.patch"))
-              (patch-flags '("-p2"))))
+                "1rhrpjsp4081nn2q215h78kc4msrj0081zg65k1gfp5hl88bg03y"))))
     (build-system cmake-build-system)
     (arguments
      '(#:tests? #f))                    ; no test target
diff --git a/gnu/packages/patches/cgal-security-pr-5371.patch b/gnu/packages/patches/cgal-security-pr-5371.patch
deleted file mode 100644
index dea53dceaf..0000000000
--- a/gnu/packages/patches/cgal-security-pr-5371.patch
+++ /dev/null
@@ -1,1611 +0,0 @@
-From 618b409b0fbcef7cb536a4134ae3a424ef5aae45 Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Mon, 18 Jan 2021 15:40:40 +0100
-Subject: [PATCH 1/8] Fix Nef_2 and Nef_S2 IO
-
----
- Nef_2/include/CGAL/Nef_2/PM_io_parser.h   |  74 ++++++++++++---
- Nef_2/include/CGAL/Nef_polyhedron_2.h     |   2 +
- Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h | 106 ++++++++++++++++------
- 3 files changed, 142 insertions(+), 40 deletions(-)
-
-diff --git a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-index 85295f3d85a..9b84dd37fbe 100644
---- a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-+++ b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-@@ -200,6 +200,11 @@ bool PM_io_parser<PMDEC>::read_vertex(Vertex_handle v)
-        !(in >> p) ||
-        !check_sep("}") ) return false;
- 
-+  if(!(f >= 0 && ((iso && f < fn) || (!iso && f < en))))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   if (iso) v->set_face(Face_of[f]);
-   else     v->set_halfedge(Halfedge_of[f]);
-   mark(v) = m; point(v) = p;
-@@ -229,10 +234,14 @@ bool PM_io_parser<PMDEC>::read_hedge(Halfedge_handle e)
-        !(in >> f) || !check_sep(",") ||
-        !(in >> m) || !check_sep("}") )
-     return false;
--  CGAL_assertion_msg
--     (eo >= 0 || (std::size_t) eo < en || epr >= 0 || (std::size_t) epr < en || ene >= 0 || (std::size_t) ene < en ||
--      v >= 0 || (std::size_t) v < vn || f >= 0 || (std::size_t) f < fn ,
--      "wrong index in read_hedge");
-+
-+  if(!(eo >= 0 && (std::size_t) eo < en && epr >= 0 && (std::size_t) epr < en && ene >= 0 && (std::size_t) ene < en &&
-+       v >= 0 && (std::size_t) v < vn && f >= 0 && (std::size_t) f < fn ))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    std::cerr<<"wrong index in read_hedge"<<std::endl;
-+    return false;
-+  }
- 
-   // precond: objects exist!
-   CGAL_assertion(EI[e->opposite()]);
-@@ -267,14 +276,32 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-   int n, ei, vi; Mark m;
-   if ( !(in >> n) || !check_sep("{") ) return false;
-   if ( !(in >> ei) || !check_sep(",") ) return false;
--  if (ei >= 0) f->set_halfedge(Halfedge_of[ei]);
-+  if (ei >= 0 && ei < en)
-+  {
-+    f->set_halfedge(Halfedge_of[ei]);
-+  }
-+  else
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   while (in >> ei) {
-     CGAL_assertion_msg(ei >= 0 && (std::size_t) ei < en, "wrong index in face cycle list.");
-+    if (!(ei >= 0 && ei < en))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     f->store_fc(Halfedge_of[ei]);
-   } in.clear();
-   if (!check_sep(",")) { return false; }
-   while (in >> vi) {
-     CGAL_assertion_msg(vi >= 0 && (std::size_t) vi < vn, "wrong index in iso vertex list.");
-+    if (!(vi >= 0 && vi < vn))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     f->store_iv(Vertex_of[vi]);
-   } in.clear();
-   if (!check_sep(",") || !(in >> m) || !check_sep("}") )
-@@ -313,13 +340,26 @@ template <typename PMDEC>
- void PM_io_parser<PMDEC>::read()
- {
-   if ( !check_sep("Plane_map_2") )
--    CGAL_error_msg("PM_io_parser::read: no embedded_PM header.");
-+  {
-+    std::cerr<<"PM_io_parser::read: no embedded_PM header."<<std::endl;
-+    return;
-+  }
-   if ( !(check_sep("vertices") && (in >> vn)) )
--    CGAL_error_msg("PM_io_parser::read: wrong node line.");
-+  {
-+    std::cerr<<"PM_io_parser::read: wrong node line."<<std::endl;
-+    return;
-+  }
-+
-   if ( !(check_sep("halfedges") && (in >> en) && (en%2==0)) )
--    CGAL_error_msg("PM_io_parser::read: wrong edge line.");
-+  {
-+    std::cerr<<"PM_io_parser::read: wrong edge line."<<std::endl;
-+    return;
-+  }
-   if ( !(check_sep("faces") && (in >> fn)) )
--    CGAL_error_msg("PM_io_parser::read: wrong face line.");
-+  {
-+    std::cerr<<"PM_io_parser::read: wrong face line."<<std::endl;
-+    return;
-+  }
- 
-   Vertex_of.resize(vn);
-   Halfedge_of.resize(en);
-@@ -333,16 +373,24 @@ void PM_io_parser<PMDEC>::read()
- 
-   for(i=0; i<vn; i++) {
-     if (!read_vertex(Vertex_of[i]))
--      CGAL_error_msg("PM_io_parser::read: error in node line");
-+    {
-+      std::cerr<<"PM_io_parser::read: error in node line"<<std::endl;
-+      return;
-+    }
-   }
-   for(i=0; i<en; i++) {
-     if (!read_hedge(Halfedge_of[i]))
--      CGAL_error_msg("PM_io_parser::read: error in halfedge\
--      line");
-+    {
-+      std::cerr<<"PM_io_parser::read: error in halfedge line"<<std::endl;
-+      return;
-+    }
-   }
-   for(i=0; i<fn; i++) {
-     if (!read_face(Face_of[i]))
--      CGAL_error_msg("PM_io_parser::read: error in face line");
-+    {
-+      std::cerr<<"PM_io_parser::read: error in face line"<<std::endl;
-+      return;
-+    }
-   }
- }
- 
-diff --git a/Nef_2/include/CGAL/Nef_polyhedron_2.h b/Nef_2/include/CGAL/Nef_polyhedron_2.h
-index 92c54593386..62aad3e5649 100644
---- a/Nef_2/include/CGAL/Nef_polyhedron_2.h
-+++ b/Nef_2/include/CGAL/Nef_polyhedron_2.h
-@@ -1112,6 +1112,8 @@ std::istream& operator>>
-     std::cerr << "Nef_polyhedron_2 input corrupted." << std::endl;
-     NP = Nef_polyhedron_2<T,Items,Mark>();
-   }
-+  if(!is)
-+    return is;
-   typename Nef_polyhedron_2<T,Items,Mark>::Topological_explorer D(NP.explorer());
-   D.check_integrity_and_topological_planarity();
-   return is;
-diff --git a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-index 7bddd3036d5..631c63dc5dc 100644
---- a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-+++ b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-@@ -203,8 +203,14 @@ bool SM_io_parser<Decorator_>::read_vertex(SVertex_handle v)
-        !(in >> p) ||
-        !check_sep("}") ) return false;
- 
--  if (iso) set_face(v,SFace_of[f]);
--  else     set_first_out_edge(v,Edge_of[f]);
-+  if(f<0 || (iso && f > fn) || (!iso && f > en))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-+
-+  if (iso) this->set_face(v,SFace_of[f]);
-+  else     this->set_first_out_edge(v,Edge_of[f]);
-   v->mark() = m; v->point() = p;
-   return true;
- }
-@@ -235,17 +241,21 @@ bool SM_io_parser<Decorator_>::read_edge(SHalfedge_handle e)
-        !(in >> m) || !check_sep(",") ||
-        !(in >> k) || !check_sep("}") )
-     return false;
--  CGAL_assertion_msg
-+  if (!
-      (eo >= 0 && eo < en && epr >= 0 && epr < en && ene >= 0 && ene < en &&
--      v >= 0 && v < vn && f >= 0 && f < fn ,
--      "wrong index in read_edge");
-+      v >= 0 && v < vn && f >= 0 && f < fn ))
-+  {
-+    std::cerr<<"wrong index in read_edge"<<std::endl;
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
- 
-   // precond: features exist!
-   CGAL_assertion(EI[e->twin()]);
--  set_prev(e,Edge_of[epr]);
--  set_next(e,Edge_of[ene]);
--  set_source(e,SVertex_of[v]);
--  set_face(e,SFace_of[f]);
-+  this->set_prev(e,Edge_of[epr]);
-+  this->set_next(e,Edge_of[ene]);
-+  this->set_source(e,SVertex_of[v]);
-+  this->set_face(e,SFace_of[f]);
-   e->mark() = m;
-   e->circle() = k;
-   return true;
-@@ -274,7 +284,7 @@ bool SM_io_parser<Decorator_>::read_loop(SHalfloop_handle l)
-   CGAL_assertion_msg(
-     (lo >= 0 && lo < 2 && f >= 0 && f < fn),"wrong index in read_edge");
- 
--  set_face(l,SFace_of[f]);
-+  this->set_face(l,SFace_of[f]);
-   l->mark() = m;
-   l->circle() = k;
-   return true;
-@@ -303,21 +313,33 @@ bool SM_io_parser<Decorator_>::read_face(SFace_handle f)
-   int n, ei, vi, li; Mark m;
-   if ( !(in >> n) || !check_sep("{") ) return false;
-   while (in >> ei) {
--    CGAL_assertion_msg(ei >= 0 && ei < en,
--                           "wrong index in face cycle list.");
--    store_sm_boundary_object(Edge_of[ei],f);
-+    if(!(ei >= 0 && ei < en))
-+    {
-+      std::cerr<<"wrong index in face cycle list."<<std::endl;
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-+    this->store_sm_boundary_object(Edge_of[ei],f);
-   } in.clear();
-   if (!check_sep(",")) { return false; }
-   while (in >> vi) {
--    CGAL_assertion_msg(vi >= 0 && vi < vn,
--                           "wrong index in iso vertex list.");
--    store_sm_boundary_object(SVertex_of[vi],f);
-+    if(!(vi >= 0 && vi < vn))
-+    {
-+      std::cerr<<"wrong index in iso vertex list."<<std::endl;
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-+    this->store_sm_boundary_object(SVertex_of[vi],f);
-   } in.clear();
-   if (!check_sep(",")) { return false; }
-   while (in >> li) {
--    CGAL_assertion_msg(li >= 0 && li < 2,
--                           "wrong index in iso vertex list.");
--    store_sm_boundary_object(Loop_of[li],f);
-+    if(!(li >= 0 && li < 2))
-+    {
-+      std::cerr<<"wrong index in iso vertex list."<<std::endl;
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-+    this->store_sm_boundary_object(Loop_of[li],f);
-   } in.clear();
-   if (!check_sep(",") || !(in >> m) || !check_sep("}") )
-     return false;
-@@ -357,16 +379,36 @@ void SM_io_parser<Decorator_>::print() const
- template <typename Decorator_>
- void SM_io_parser<Decorator_>::read()
- {
-+  if ( !check_sep("Nef_polyhedron_S2") )
-+  {
-+   std::cerr<<"Missing line in header"<<std::endl;
-+   return;
-+  }
-   if ( !check_sep("Sphere_map_2") )
--    CGAL_error_msg("SM_io_parser::read: no embedded_PM header.");
-+  {
-+   std::cerr<<"SM_io_parser::read: no embedded_PM header."<<std::endl;
-+   return;
-+  }
-   if ( !(check_sep("vertices") && (in >> vn)) )
--    CGAL_error_msg("SM_io_parser::read: wrong vertex line.");
-+  {
-+   std::cerr<<"SM_io_parser::read: wrong vertex line."<<std::endl;
-+   return;
-+  }
-   if ( !(check_sep("edges") && (in >> en) && (en%2==0)) )
--    CGAL_error_msg("SM_io_parser::read: wrong edge line.");
-+  {
-+   std::cerr<<"SM_io_parser::read: wrong edge line."<<std::endl;
-+   return;
-+  }
-   if ( !(check_sep("loops") && (in >> ln)) )
--    CGAL_error_msg("SM_io_parser::read: wrong loop line.");
-+  {
-+   std::cerr<<"SM_io_parser::read: wrong loop line."<<std::endl;
-+   return;
-+  }
-   if ( !(check_sep("faces") && (in >> fn)) )
--    CGAL_error_msg("SM_io_parser::read: wrong face line.");
-+  {
-+   std::cerr<<"SM_io_parser::read: wrong face line."<<std::endl;
-+   return;
-+  }
- 
-   SVertex_of.resize(vn);
-   Edge_of.resize(en);
-@@ -383,18 +425,28 @@ void SM_io_parser<Decorator_>::read()
- 
-   for(i=0; i<vn; i++) {
-     if (!read_vertex(SVertex_of[i]))
--      CGAL_error_msg("SM_io_parser::read: error in node line");
-+    {
-+     std::cerr<<"SM_io_parser::read: error in node line"<<std::endl;
-+     return;
-+    }
-   }
-   for(i=0; i<en; i++) {
-     if (!read_edge(Edge_of[i]))
--      CGAL_error_msg("SM_io_parser::read: error in edge line");
-+    {
-+     std::cerr<<"SM_io_parser::read: error in edge line"<<std::endl;
-+     return;
-+    }
-+
-   }
-   if ( ln == 2 ) {
-     read_loop(Loop_of[0]); read_loop(Loop_of[1]);
-   }
-   for(i=0; i<fn; i++) {
-     if (!read_face(SFace_of[i]))
--      CGAL_error_msg("SM_io_parser::read: error in face line");
-+    {
-+     std::cerr<<"SM_io_parser::read: error in face line"<<std::endl;
-+     return;
-+    }
-   }
- }
- 
-
-From 5a1ab45058112f8647c14c02f58905ecc597ec76 Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Tue, 19 Jan 2021 12:24:08 +0100
-Subject: [PATCH 2/8] Fix Nef_3
-
----
- Nef_3/include/CGAL/Nef_3/SNC_io_parser.h | 195 ++++++++++++++++++++++-
- 1 file changed, 188 insertions(+), 7 deletions(-)
-
-diff --git a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-index 5eee7528ee7..04d9d0ac8e8 100644
---- a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-+++ b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-@@ -1444,40 +1444,61 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   typename std::vector<Vertex_iterator>::iterator vi;
-   for(vi=Vertex_of.begin(); vi!=Vertex_of.end(); ++vi) {
-     if (!read_vertex<K>(*vi))
--      CGAL_error_msg("SNC_io_parser::read: error in node line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in node line"<<std::endl;
-+      return;
-+    }
-   }
- 
-   typename std::vector<Halfedge_iterator>::iterator ei;
-   for(ei=Edge_of.begin(); ei!=Edge_of.end(); ++ei) {
-     if (!read_edge<K>(*ei))
--      CGAL_error_msg("SNC_io_parser::read: error in edge line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in edge line"<<std::endl;
-+      return;
-+    }
-   }
- 
-   typedef typename std::vector<Halffacet_iterator>::iterator vhf_iterator;
-   vhf_iterator fi;
-   for(fi=Halffacet_of.begin(); fi!=Halffacet_of.end(); ++fi) {
-     if (!read_facet<K>(*fi))
--      CGAL_error_msg("SNC_io_parser::read: error in facet line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in facet line"<<std::endl;
-+      return;
-+    }
-   }
-   typename std::vector<Volume_iterator>::iterator ci;
-   for(ci=Volume_of.begin()+plus01; ci!=Volume_of.end(); ++ci) {
-     if (!read_volume(*ci))
--      CGAL_error_msg("SNC_io_parser::read: error in volume line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in volume line"<<std::endl;
-+      return;
-+    }
-   }
-   typename std::vector<SHalfedge_iterator>::iterator sei;
-   for(sei=SEdge_of.begin(); sei!=SEdge_of.end(); ++sei) {
-     if (!read_sedge<K>(*sei))
--      CGAL_error_msg("SNC_io_parser::read: error in sedge line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in sedge line"<<std::endl;
-+      return;
-+    }
-   }
-   typename std::vector<SHalfloop_iterator>::iterator sli;
-   for(sli=SLoop_of.begin(); sli!=SLoop_of.end(); ++sli) {
-     if (!read_sloop<K>(*sli))
--      CGAL_error_msg("SNC_io_parser::read: error in sloop line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in sloop line"<<std::endl;
-+      return;
-+    }
-   }
-   typename std::vector<SFace_iterator>::iterator sfi;
-   for(sfi=SFace_of.begin(); sfi!=SFace_of.end(); ++sfi) {
-     if (!read_sface(*sfi))
--      CGAL_error_msg("SNC_io_parser::read: error in sface line");
-+    {
-+      std::cerr<<"SNC_io_parser::read: error in sface line"<<std::endl;
-+      return;
-+    }
-   }
- 
-   SNC_constructor C(*this->sncp());
-@@ -1535,21 +1556,56 @@ read_vertex(Vertex_handle vh) {
-   vh->sncp() = this->sncp();
- 
-   in >> index;
-+  if(index >= int(en))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->svertices_begin() = (index >= 0 ? Edge_of[index] : this->svertices_end());
-   in >> index;
-+  if(index >= int(en))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->svertices_last()  = index >= 0 ? Edge_of[index] : this->svertices_end();
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->shalfedges_begin() = index >= 0 ? SEdge_of[index] : this->shalfedges_end();
-   in >> index;
-+  if(index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->shalfedges_last()  = index >= 0 ? SEdge_of[index] : this->shalfedges_end();
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index >= int(sfn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->sfaces_begin() = index >= 0 ? SFace_of[index] : this->sfaces_end();
-   in >> index;
-+  if(index >= int(sfn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->sfaces_last()  = index >= 0 ? SFace_of[index] : this->sfaces_end();
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index >= int(sln))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   vh->shalfloop() = index >= 0 ? SLoop_of[index] : this->shalfloops_end();
-   OK = OK && test_string("|");
- #ifdef CGAL_NEF_NATURAL_COORDINATE_INPUT
-@@ -1604,17 +1660,37 @@ read_edge(Halfedge_handle eh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
-+  if(index < 0 || index >= int(en))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   eh->twin() = Edge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(vn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   eh->center_vertex() = Vertex_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-   if(index == 0) {
-     in >> index;
-+    if(index < 0 || index >= int(sen))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     eh->out_sedge() = SEdge_of[index];
-   } else {
-     in >> index;
-+    if(index < 0 || index >= int(sfn))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     eh->incident_sface() = SFace_of[index];
-   }
-   OK = OK && test_string("|");
-@@ -1669,6 +1745,11 @@ read_facet(Halffacet_handle fh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
-+  if(index < 0 || index >= int(fn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   fh->twin() = Halffacet_of[index];
-   OK = OK && test_string(",");
- 
-@@ -1676,6 +1757,11 @@ read_facet(Halffacet_handle fh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
-+    if(index < 0 || index >= int(sen))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     fh->boundary_entry_objects().push_back(make_object(SEdge_of[index]));
-     in >> cc;
-   }
-@@ -1684,11 +1770,21 @@ read_facet(Halffacet_handle fh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
-+    if(index < 0 || index >= int(sln))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     fh->boundary_entry_objects().push_back(make_object(SLoop_of[index]));
-     in >> cc;
-   }
- 
-   in >> index;
-+  if(index < 0  || index >= int(vn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   fh->incident_volume() = Volume_of[index+addInfiBox];
-   OK = OK && test_string("|");
- #ifdef CGAL_NEF_NATURAL_COORDINATE_INPUT
-@@ -1731,6 +1827,11 @@ read_volume(Volume_handle ch) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
-+    if(index < 0 || index >= int(sfn))
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     ch->shell_entry_objects().push_back(make_object(SFace_of[index]));
-     in >> cc;
-   }
-@@ -1781,27 +1882,67 @@ read_sedge(SHalfedge_handle seh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
-+  if(index < 0 || index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->twin() = SEdge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->sprev() = SEdge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->snext() = SEdge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(en))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->source() = Edge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(sfn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->incident_sface() = SFace_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->prev() = SEdge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(sen))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->next() = SEdge_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= int(fn))
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   seh->facet() = Halffacet_of[index];
-   OK = OK && test_string("|");
- #ifdef CGAL_NEF_NATURAL_COORDINATE_INPUT
-@@ -1852,12 +1993,27 @@ read_sloop(SHalfloop_handle slh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
-+  if(index < 0 || index >= sln)
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   slh->twin() = SLoop_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= sfn)
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   slh->incident_sface() = SFace_of[index];
-   OK = OK && test_string(",");
-   in >> index;
-+  if(index < 0 || index >= fn)
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   slh->facet() = Halffacet_of[index];
-   OK = OK && test_string("|");
- #ifdef CGAL_NEF_NATURAL_COORDINATE_INPUT
-@@ -1904,6 +2060,11 @@ read_sface(SFace_handle sfh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
-+  if(index < 0 || index >= vn)
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   sfh->center_vertex() = Vertex_of[index];
-   OK = OK && test_string(",");
- 
-@@ -1913,6 +2074,11 @@ read_sface(SFace_handle sfh) {
-     in >> index;
-     //    sfh->boundary_entry_objects().push_back(SEdge_of[index]);
-     SM_decorator SD(&*sfh->center_vertex());
-+    if(index < 0 || index >= sen)
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     SD.link_as_face_cycle(SEdge_of[index],sfh);
-     in >> cc;
-   }
-@@ -1921,6 +2087,11 @@ read_sface(SFace_handle sfh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
-+    if(index < 0 || index >= en)
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     sfh->boundary_entry_objects().push_back(make_object(Edge_of[index]));
-     this->sncp()->store_sm_boundary_item(Edge_of[index], --(sfh->sface_cycles_end()));
-     in >> cc;
-@@ -1930,12 +2101,22 @@ read_sface(SFace_handle sfh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
-+    if(index < 0 || index >= sln)
-+    {
-+      in.clear(std::ios_base::badbit);
-+      return false;
-+    }
-     sfh->boundary_entry_objects().push_back(make_object(SLoop_of[index]));
-     this->sncp()->store_sm_boundary_item(SLoop_of[index], --(sfh->sface_cycles_end()));
-     in >> cc;
-   }
- 
-   in >> index;
-+  if(index < 0 || index >= vn)
-+  {
-+    in.clear(std::ios_base::badbit);
-+    return false;
-+  }
-   sfh->volume() = Volume_of[index+addInfiBox];
-   OK = OK && test_string("}");
-   in >> sfh->mark();
-
-From 9e291e6bbfe23137fb2dd3a0f8d6461229ca2376 Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Tue, 19 Jan 2021 14:04:54 +0100
-Subject: [PATCH 3/8] replace cerr by CGAL_warning_msg
-
----
- Nef_2/include/CGAL/Nef_2/PM_io_parser.h   | 14 +++---
- Nef_3/include/CGAL/Nef_3/SNC_io_parser.h  | 53 ++++++++++++++++-------
- Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h | 18 ++++----
- 3 files changed, 54 insertions(+), 31 deletions(-)
-
-diff --git a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-index 9b84dd37fbe..52bc830e115 100644
---- a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-+++ b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-@@ -341,23 +341,23 @@ void PM_io_parser<PMDEC>::read()
- {
-   if ( !check_sep("Plane_map_2") )
-   {
--    std::cerr<<"PM_io_parser::read: no embedded_PM header."<<std::endl;
-+    CGAL_warning_msg(false, "PM_io_parser::read: no embedded_PM header.");
-     return;
-   }
-   if ( !(check_sep("vertices") && (in >> vn)) )
-   {
--    std::cerr<<"PM_io_parser::read: wrong node line."<<std::endl;
-+    CGAL_warning_msg(false, "PM_io_parser::read: wrong node line.");
-     return;
-   }
- 
-   if ( !(check_sep("halfedges") && (in >> en) && (en%2==0)) )
-   {
--    std::cerr<<"PM_io_parser::read: wrong edge line."<<std::endl;
-+    CGAL_warning_msg(false, "PM_io_parser::read: wrong edge line.");
-     return;
-   }
-   if ( !(check_sep("faces") && (in >> fn)) )
-   {
--    std::cerr<<"PM_io_parser::read: wrong face line."<<std::endl;
-+    CGAL_warning_msg(false, "PM_io_parser::read: wrong face line.");
-     return;
-   }
- 
-@@ -374,21 +374,21 @@ void PM_io_parser<PMDEC>::read()
-   for(i=0; i<vn; i++) {
-     if (!read_vertex(Vertex_of[i]))
-     {
--      std::cerr<<"PM_io_parser::read: error in node line"<<std::endl;
-+      CGAL_warning_msg(false, "PM_io_parser::read: error in node line");
-       return;
-     }
-   }
-   for(i=0; i<en; i++) {
-     if (!read_hedge(Halfedge_of[i]))
-     {
--      std::cerr<<"PM_io_parser::read: error in halfedge line"<<std::endl;
-+      CGAL_warning_msg(false, "PM_io_parser::read: error in halfedge line");
-       return;
-     }
-   }
-   for(i=0; i<fn; i++) {
-     if (!read_face(Face_of[i]))
-     {
--      std::cerr<<"PM_io_parser::read: error in face line"<<std::endl;
-+      CGAL_warning_msg(false, "PM_io_parser::read: error in face line");
-       return;
-     }
-   }
-diff --git a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-index 04d9d0ac8e8..21c54dd4133 100644
---- a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-+++ b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-@@ -1400,24 +1400,47 @@ template <typename EW>
- void SNC_io_parser<EW>::read()
- {
-   if ( !check_sep("Selective Nef Complex") )
--    CGAL_error_msg("SNC_io_parser::read: no SNC header.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: no SNC header.");
-+    returnl
-+  }
-   std::string kernel_type;
-   in >> kernel_type;
-   CGAL_assertion(kernel_type == "standard" || kernel_type == "extended");
-   if ( !(check_sep("vertices") && (in >> vn)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong vertex line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong vertex line.");
-+    return;
-+  }
-   if ( !(check_sep("halfedges") && (in >> en) && (en%2==0)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong edge line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong edge line.");
-+    return;
-+  }
-   if ( !(check_sep("facets") && (in >> fn) && (fn%2==0)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong facet line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong facet line.");
-+  }
-   if ( !(check_sep("volumes") && (in >> cn)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong volume line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong volume line.");
-+    return;
-+  }
-   if ( !(check_sep("shalfedges") && (in >> sen)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong sedge line.");
-+  {
-+   CGAL_warning_msg(false, "SNC_io_parser::read: wrong sedge line.");
-+   return;
-+  }
-   if ( !(check_sep("shalfloops") && (in >> sln)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong sloop line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong sloop line.");
-+    return;
-+  }
-   if ( !(check_sep("sfaces") && (in >> sfn)) )
--    CGAL_error_msg("SNC_io_parser::read: wrong sface line.");
-+  {
-+    CGAL_warning_msg(false, "SNC_io_parser::read: wrong sface line.");
-+    return;
-+  }
- 
-   addInfiBox = (kernel_type == "standard" && Infi_box::extended_kernel());
- 
-@@ -1445,7 +1468,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(vi=Vertex_of.begin(); vi!=Vertex_of.end(); ++vi) {
-     if (!read_vertex<K>(*vi))
-     {
--      std::cerr<<"SNC_io_parser::read: error in node line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in node line");
-       return;
-     }
-   }
-@@ -1454,7 +1477,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(ei=Edge_of.begin(); ei!=Edge_of.end(); ++ei) {
-     if (!read_edge<K>(*ei))
-     {
--      std::cerr<<"SNC_io_parser::read: error in edge line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in edge line");
-       return;
-     }
-   }
-@@ -1464,7 +1487,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(fi=Halffacet_of.begin(); fi!=Halffacet_of.end(); ++fi) {
-     if (!read_facet<K>(*fi))
-     {
--      std::cerr<<"SNC_io_parser::read: error in facet line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in facet line");
-       return;
-     }
-   }
-@@ -1472,7 +1495,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(ci=Volume_of.begin()+plus01; ci!=Volume_of.end(); ++ci) {
-     if (!read_volume(*ci))
-     {
--      std::cerr<<"SNC_io_parser::read: error in volume line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in volume line");
-       return;
-     }
-   }
-@@ -1480,7 +1503,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(sei=SEdge_of.begin(); sei!=SEdge_of.end(); ++sei) {
-     if (!read_sedge<K>(*sei))
-     {
--      std::cerr<<"SNC_io_parser::read: error in sedge line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in sedge line");
-       return;
-     }
-   }
-@@ -1488,7 +1511,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(sli=SLoop_of.begin(); sli!=SLoop_of.end(); ++sli) {
-     if (!read_sloop<K>(*sli))
-     {
--      std::cerr<<"SNC_io_parser::read: error in sloop line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in sloop line");
-       return;
-     }
-   }
-@@ -1496,7 +1519,7 @@ void SNC_io_parser<EW>::read_items(int plus01) {
-   for(sfi=SFace_of.begin(); sfi!=SFace_of.end(); ++sfi) {
-     if (!read_sface(*sfi))
-     {
--      std::cerr<<"SNC_io_parser::read: error in sface line"<<std::endl;
-+      CGAL_warning_msg(false, "SNC_io_parser::read: error in sface line");
-       return;
-     }
-   }
-diff --git a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-index 631c63dc5dc..a9377719f93 100644
---- a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-+++ b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-@@ -381,32 +381,32 @@ void SM_io_parser<Decorator_>::read()
- {
-   if ( !check_sep("Nef_polyhedron_S2") )
-   {
--   std::cerr<<"Missing line in header"<<std::endl;
-+   CGAL_warning_msg(false, "Missing line in header");
-    return;
-   }
-   if ( !check_sep("Sphere_map_2") )
-   {
--   std::cerr<<"SM_io_parser::read: no embedded_PM header."<<std::endl;
-+   CGAL_warning_msg(false, "SM_io_parser::read: no embedded_PM header.");
-    return;
-   }
-   if ( !(check_sep("vertices") && (in >> vn)) )
-   {
--   std::cerr<<"SM_io_parser::read: wrong vertex line."<<std::endl;
-+   CGAL_warning_msg(false, "SM_io_parser::read: wrong vertex line.");
-    return;
-   }
-   if ( !(check_sep("edges") && (in >> en) && (en%2==0)) )
-   {
--   std::cerr<<"SM_io_parser::read: wrong edge line."<<std::endl;
-+   CGAL_warning_msg(false, "SM_io_parser::read: wrong edge line.");
-    return;
-   }
-   if ( !(check_sep("loops") && (in >> ln)) )
-   {
--   std::cerr<<"SM_io_parser::read: wrong loop line."<<std::endl;
-+   CGAL_warning_msg(false, "SM_io_parser::read: wrong loop line.");
-    return;
-   }
-   if ( !(check_sep("faces") && (in >> fn)) )
-   {
--   std::cerr<<"SM_io_parser::read: wrong face line."<<std::endl;
-+   CGAL_warning_msg(false, "SM_io_parser::read: wrong face line.");
-    return;
-   }
- 
-@@ -426,14 +426,14 @@ void SM_io_parser<Decorator_>::read()
-   for(i=0; i<vn; i++) {
-     if (!read_vertex(SVertex_of[i]))
-     {
--     std::cerr<<"SM_io_parser::read: error in node line"<<std::endl;
-+     CGAL_warning_msg(false, "SM_io_parser::read: error in node line");
-      return;
-     }
-   }
-   for(i=0; i<en; i++) {
-     if (!read_edge(Edge_of[i]))
-     {
--     std::cerr<<"SM_io_parser::read: error in edge line"<<std::endl;
-+     CGAL_warning_msg(false, "SM_io_parser::read: error in edge line");
-      return;
-     }
- 
-@@ -444,7 +444,7 @@ void SM_io_parser<Decorator_>::read()
-   for(i=0; i<fn; i++) {
-     if (!read_face(SFace_of[i]))
-     {
--     std::cerr<<"SM_io_parser::read: error in face line"<<std::endl;
-+     CGAL_warning_msg(false, "SM_io_parser::read: error in face line");
-      return;
-     }
-   }
-
-From 2e592e0027b2d85680273425161581655f4677fd Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Wed, 20 Jan 2021 08:38:33 +0100
-Subject: [PATCH 4/8] Fix typo and use setstate
-
----
- Nef_2/include/CGAL/Nef_2/PM_io_parser.h   | 10 ++--
- Nef_3/include/CGAL/Nef_3/SNC_io_parser.h  | 66 +++++++++++------------
- Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h | 10 ++--
- 3 files changed, 43 insertions(+), 43 deletions(-)
-
-diff --git a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-index 52bc830e115..64a3e94916e 100644
---- a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-+++ b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-@@ -202,7 +202,7 @@ bool PM_io_parser<PMDEC>::read_vertex(Vertex_handle v)
- 
-   if(!(f >= 0 && ((iso && f < fn) || (!iso && f < en))))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   if (iso) v->set_face(Face_of[f]);
-@@ -238,7 +238,7 @@ bool PM_io_parser<PMDEC>::read_hedge(Halfedge_handle e)
-   if(!(eo >= 0 && (std::size_t) eo < en && epr >= 0 && (std::size_t) epr < en && ene >= 0 && (std::size_t) ene < en &&
-        v >= 0 && (std::size_t) v < vn && f >= 0 && (std::size_t) f < fn ))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     std::cerr<<"wrong index in read_hedge"<<std::endl;
-     return false;
-   }
-@@ -282,14 +282,14 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-   }
-   else
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   while (in >> ei) {
-     CGAL_assertion_msg(ei >= 0 && (std::size_t) ei < en, "wrong index in face cycle list.");
-     if (!(ei >= 0 && ei < en))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     f->store_fc(Halfedge_of[ei]);
-@@ -299,7 +299,7 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-     CGAL_assertion_msg(vi >= 0 && (std::size_t) vi < vn, "wrong index in iso vertex list.");
-     if (!(vi >= 0 && vi < vn))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     f->store_iv(Vertex_of[vi]);
-diff --git a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-index 21c54dd4133..e5530445153 100644
---- a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-+++ b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-@@ -1402,7 +1402,7 @@ void SNC_io_parser<EW>::read()
-   if ( !check_sep("Selective Nef Complex") )
-   {
-     CGAL_warning_msg(false, "SNC_io_parser::read: no SNC header.");
--    returnl
-+    return;
-   }
-   std::string kernel_type;
-   in >> kernel_type;
-@@ -1581,14 +1581,14 @@ read_vertex(Vertex_handle vh) {
-   in >> index;
-   if(index >= int(en))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->svertices_begin() = (index >= 0 ? Edge_of[index] : this->svertices_end());
-   in >> index;
-   if(index >= int(en))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->svertices_last()  = index >= 0 ? Edge_of[index] : this->svertices_end();
-@@ -1596,14 +1596,14 @@ read_vertex(Vertex_handle vh) {
-   in >> index;
-   if(index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->shalfedges_begin() = index >= 0 ? SEdge_of[index] : this->shalfedges_end();
-   in >> index;
-   if(index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->shalfedges_last()  = index >= 0 ? SEdge_of[index] : this->shalfedges_end();
-@@ -1611,14 +1611,14 @@ read_vertex(Vertex_handle vh) {
-   in >> index;
-   if(index >= int(sfn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->sfaces_begin() = index >= 0 ? SFace_of[index] : this->sfaces_end();
-   in >> index;
-   if(index >= int(sfn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->sfaces_last()  = index >= 0 ? SFace_of[index] : this->sfaces_end();
-@@ -1626,7 +1626,7 @@ read_vertex(Vertex_handle vh) {
-   in >> index;
-   if(index >= int(sln))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   vh->shalfloop() = index >= 0 ? SLoop_of[index] : this->shalfloops_end();
-@@ -1685,7 +1685,7 @@ read_edge(Halfedge_handle eh) {
-   in >> index;
-   if(index < 0 || index >= int(en))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   eh->twin() = Edge_of[index];
-@@ -1693,7 +1693,7 @@ read_edge(Halfedge_handle eh) {
-   in >> index;
-   if(index < 0 || index >= int(vn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   eh->center_vertex() = Vertex_of[index];
-@@ -1703,7 +1703,7 @@ read_edge(Halfedge_handle eh) {
-     in >> index;
-     if(index < 0 || index >= int(sen))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     eh->out_sedge() = SEdge_of[index];
-@@ -1711,7 +1711,7 @@ read_edge(Halfedge_handle eh) {
-     in >> index;
-     if(index < 0 || index >= int(sfn))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     eh->incident_sface() = SFace_of[index];
-@@ -1770,7 +1770,7 @@ read_facet(Halffacet_handle fh) {
-   in >> index;
-   if(index < 0 || index >= int(fn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   fh->twin() = Halffacet_of[index];
-@@ -1782,7 +1782,7 @@ read_facet(Halffacet_handle fh) {
-     in >> index;
-     if(index < 0 || index >= int(sen))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     fh->boundary_entry_objects().push_back(make_object(SEdge_of[index]));
-@@ -1795,7 +1795,7 @@ read_facet(Halffacet_handle fh) {
-     in >> index;
-     if(index < 0 || index >= int(sln))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     fh->boundary_entry_objects().push_back(make_object(SLoop_of[index]));
-@@ -1805,7 +1805,7 @@ read_facet(Halffacet_handle fh) {
-   in >> index;
-   if(index < 0  || index >= int(vn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   fh->incident_volume() = Volume_of[index+addInfiBox];
-@@ -1852,7 +1852,7 @@ read_volume(Volume_handle ch) {
-     in >> index;
-     if(index < 0 || index >= int(sfn))
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     ch->shell_entry_objects().push_back(make_object(SFace_of[index]));
-@@ -1907,7 +1907,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->twin() = SEdge_of[index];
-@@ -1915,7 +1915,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->sprev() = SEdge_of[index];
-@@ -1923,7 +1923,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->snext() = SEdge_of[index];
-@@ -1931,7 +1931,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(en))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->source() = Edge_of[index];
-@@ -1939,7 +1939,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sfn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->incident_sface() = SFace_of[index];
-@@ -1947,7 +1947,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->prev() = SEdge_of[index];
-@@ -1955,7 +1955,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(sen))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->next() = SEdge_of[index];
-@@ -1963,7 +1963,7 @@ read_sedge(SHalfedge_handle seh) {
-   in >> index;
-   if(index < 0 || index >= int(fn))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   seh->facet() = Halffacet_of[index];
-@@ -2018,7 +2018,7 @@ read_sloop(SHalfloop_handle slh) {
-   in >> index;
-   if(index < 0 || index >= sln)
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   slh->twin() = SLoop_of[index];
-@@ -2026,7 +2026,7 @@ read_sloop(SHalfloop_handle slh) {
-   in >> index;
-   if(index < 0 || index >= sfn)
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   slh->incident_sface() = SFace_of[index];
-@@ -2034,7 +2034,7 @@ read_sloop(SHalfloop_handle slh) {
-   in >> index;
-   if(index < 0 || index >= fn)
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   slh->facet() = Halffacet_of[index];
-@@ -2085,7 +2085,7 @@ read_sface(SFace_handle sfh) {
-   in >> index;
-   if(index < 0 || index >= vn)
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   sfh->center_vertex() = Vertex_of[index];
-@@ -2099,7 +2099,7 @@ read_sface(SFace_handle sfh) {
-     SM_decorator SD(&*sfh->center_vertex());
-     if(index < 0 || index >= sen)
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     SD.link_as_face_cycle(SEdge_of[index],sfh);
-@@ -2112,7 +2112,7 @@ read_sface(SFace_handle sfh) {
-     in >> index;
-     if(index < 0 || index >= en)
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     sfh->boundary_entry_objects().push_back(make_object(Edge_of[index]));
-@@ -2126,7 +2126,7 @@ read_sface(SFace_handle sfh) {
-     in >> index;
-     if(index < 0 || index >= sln)
-     {
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     sfh->boundary_entry_objects().push_back(make_object(SLoop_of[index]));
-@@ -2137,7 +2137,7 @@ read_sface(SFace_handle sfh) {
-   in >> index;
-   if(index < 0 || index >= vn)
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
-   sfh->volume() = Volume_of[index+addInfiBox];
-diff --git a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-index a9377719f93..d58126bac9c 100644
---- a/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-+++ b/Nef_S2/include/CGAL/Nef_S2/SM_io_parser.h
-@@ -205,7 +205,7 @@ bool SM_io_parser<Decorator_>::read_vertex(SVertex_handle v)
- 
-   if(f<0 || (iso && f > fn) || (!iso && f > en))
-   {
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
- 
-@@ -246,7 +246,7 @@ bool SM_io_parser<Decorator_>::read_edge(SHalfedge_handle e)
-       v >= 0 && v < vn && f >= 0 && f < fn ))
-   {
-     std::cerr<<"wrong index in read_edge"<<std::endl;
--    in.clear(std::ios_base::badbit);
-+    in.setstate(std::ios_base::badbit);
-     return false;
-   }
- 
-@@ -316,7 +316,7 @@ bool SM_io_parser<Decorator_>::read_face(SFace_handle f)
-     if(!(ei >= 0 && ei < en))
-     {
-       std::cerr<<"wrong index in face cycle list."<<std::endl;
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     this->store_sm_boundary_object(Edge_of[ei],f);
-@@ -326,7 +326,7 @@ bool SM_io_parser<Decorator_>::read_face(SFace_handle f)
-     if(!(vi >= 0 && vi < vn))
-     {
-       std::cerr<<"wrong index in iso vertex list."<<std::endl;
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     this->store_sm_boundary_object(SVertex_of[vi],f);
-@@ -336,7 +336,7 @@ bool SM_io_parser<Decorator_>::read_face(SFace_handle f)
-     if(!(li >= 0 && li < 2))
-     {
-       std::cerr<<"wrong index in iso vertex list."<<std::endl;
--      in.clear(std::ios_base::badbit);
-+      in.setstate(std::ios_base::badbit);
-       return false;
-     }
-     this->store_sm_boundary_object(Loop_of[li],f);
-
-From ffa019712b0ad3b20e3d02edad4d731fda04a2ef Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Mon, 25 Jan 2021 12:59:48 +0100
-Subject: [PATCH 5/8] First face may be -1, don't fail on it, just don't use it
-
----
- Nef_2/include/CGAL/Nef_2/PM_io_parser.h | 6 +-----
- 1 file changed, 1 insertion(+), 5 deletions(-)
-
-diff --git a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-index 64a3e94916e..d08b08180d6 100644
---- a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-+++ b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-@@ -280,11 +280,7 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-   {
-     f->set_halfedge(Halfedge_of[ei]);
-   }
--  else
--  {
--    in.setstate(std::ios_base::badbit);
--    return false;
--  }
-+
-   while (in >> ei) {
-     CGAL_assertion_msg(ei >= 0 && (std::size_t) ei < en, "wrong index in face cycle list.");
-     if (!(ei >= 0 && ei < en))
-
-From d78842712cdfcbb3bdfc5f7cb252d3772fd6a16f Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Tue, 26 Jan 2021 09:55:20 +0100
-Subject: [PATCH 6/8] Fix conversion warnigns
-
----
- Nef_2/include/CGAL/Nef_2/PM_io_parser.h  |  8 ++++----
- Nef_3/include/CGAL/Nef_3/SNC_io_parser.h | 18 +++++++++---------
- 2 files changed, 13 insertions(+), 13 deletions(-)
-
-diff --git a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-index d08b08180d6..39b99b37d7c 100644
---- a/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-+++ b/Nef_2/include/CGAL/Nef_2/PM_io_parser.h
-@@ -200,7 +200,7 @@ bool PM_io_parser<PMDEC>::read_vertex(Vertex_handle v)
-        !(in >> p) ||
-        !check_sep("}") ) return false;
- 
--  if(!(f >= 0 && ((iso && f < fn) || (!iso && f < en))))
-+  if(!(f >= 0 && ((iso && (std::size_t)f < fn) || (!iso && (std::size_t)f < en))))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -276,14 +276,14 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-   int n, ei, vi; Mark m;
-   if ( !(in >> n) || !check_sep("{") ) return false;
-   if ( !(in >> ei) || !check_sep(",") ) return false;
--  if (ei >= 0 && ei < en)
-+  if (ei >= 0 && (std::size_t) ei < en)
-   {
-     f->set_halfedge(Halfedge_of[ei]);
-   }
- 
-   while (in >> ei) {
-     CGAL_assertion_msg(ei >= 0 && (std::size_t) ei < en, "wrong index in face cycle list.");
--    if (!(ei >= 0 && ei < en))
-+    if (!(ei >= 0 && (std::size_t)ei < en))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -293,7 +293,7 @@ bool PM_io_parser<PMDEC>::read_face(Face_handle f)
-   if (!check_sep(",")) { return false; }
-   while (in >> vi) {
-     CGAL_assertion_msg(vi >= 0 && (std::size_t) vi < vn, "wrong index in iso vertex list.");
--    if (!(vi >= 0 && vi < vn))
-+    if (!(vi >= 0 && (std::size_t)vi < vn))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-diff --git a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-index e5530445153..1dde7f8d0b3 100644
---- a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-+++ b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-@@ -1579,7 +1579,7 @@ read_vertex(Vertex_handle vh) {
-   vh->sncp() = this->sncp();
- 
-   in >> index;
--  if(index >= int(en))
-+  if(index >= (int)en)
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2016,7 +2016,7 @@ read_sloop(SHalfloop_handle slh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
--  if(index < 0 || index >= sln)
-+  if(index < 0 || index >= (int)(sln))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2024,7 +2024,7 @@ read_sloop(SHalfloop_handle slh) {
-   slh->twin() = SLoop_of[index];
-   OK = OK && test_string(",");
-   in >> index;
--  if(index < 0 || index >= sfn)
-+  if(index < 0 || index >= (int)(sfn))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2032,7 +2032,7 @@ read_sloop(SHalfloop_handle slh) {
-   slh->incident_sface() = SFace_of[index];
-   OK = OK && test_string(",");
-   in >> index;
--  if(index < 0 || index >= fn)
-+  if(index < 0 || index >= (int)(fn))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2083,7 +2083,7 @@ read_sface(SFace_handle sfh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
--  if(index < 0 || index >= vn)
-+  if(index < 0 || index >= (int)(sln))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2097,7 +2097,7 @@ read_sface(SFace_handle sfh) {
-     in >> index;
-     //    sfh->boundary_entry_objects().push_back(SEdge_of[index]);
-     SM_decorator SD(&*sfh->center_vertex());
--    if(index < 0 || index >= sen)
-+    if(index < 0 || index >= (int)(sln))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -2110,7 +2110,7 @@ read_sface(SFace_handle sfh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
--    if(index < 0 || index >= en)
-+    if(index < 0 || index >= (int)(sln))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -2124,7 +2124,7 @@ read_sface(SFace_handle sfh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
--    if(index < 0 || index >= sln)
-+    if(index < 0 || index >= (int)(sln))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -2135,7 +2135,7 @@ read_sface(SFace_handle sfh) {
-   }
- 
-   in >> index;
--  if(index < 0 || index >= vn)
-+  if(index < 0 || index >= (int)(sln))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-
-From 23cc6b0f4a2ac6061b01d86411d58b6da7ff5a34 Mon Sep 17 00:00:00 2001
-From: Maxime Gimeno <maxime.gimeno@gmail.com>
-Date: Wed, 27 Jan 2021 10:04:45 +0100
-Subject: [PATCH 7/8] Fix read_sface
-
----
- .../Convex_decomposition_3/check_decomposition.cpp     |  2 ++
- Nef_3/include/CGAL/Nef_3/SNC_io_parser.h               | 10 +++++-----
- 2 files changed, 7 insertions(+), 5 deletions(-)
-
-diff --git a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-index 1dde7f8d0b3..a31a07c5d99 100644
---- a/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-+++ b/Nef_3/include/CGAL/Nef_3/SNC_io_parser.h
-@@ -1803,7 +1803,7 @@ read_facet(Halffacet_handle fh) {
-   }
- 
-   in >> index;
--  if(index < 0  || index >= int(vn))
-+  if(index < 0  || index >= int(cn))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2083,7 +2083,7 @@ read_sface(SFace_handle sfh) {
-   OK = OK && test_string("{");
- 
-   in >> index;
--  if(index < 0 || index >= (int)(sln))
-+  if(index < 0 || index >= (int)(vn))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-@@ -2097,7 +2097,7 @@ read_sface(SFace_handle sfh) {
-     in >> index;
-     //    sfh->boundary_entry_objects().push_back(SEdge_of[index]);
-     SM_decorator SD(&*sfh->center_vertex());
--    if(index < 0 || index >= (int)(sln))
-+    if(index < 0 || index >= (int)(sen))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -2110,7 +2110,7 @@ read_sface(SFace_handle sfh) {
-   while(isdigit(cc)) {
-     in.putback(cc);
-     in >> index;
--    if(index < 0 || index >= (int)(sln))
-+    if(index < 0 || index >= (int)(en))
-     {
-       in.setstate(std::ios_base::badbit);
-       return false;
-@@ -2135,7 +2135,7 @@ read_sface(SFace_handle sfh) {
-   }
- 
-   in >> index;
--  if(index < 0 || index >= (int)(sln))
-+  if(index < 0 || index >= (int)(cn))
-   {
-     in.setstate(std::ios_base::badbit);
-     return false;
-