Exploit that construct is variadic

Arrangement_on_surface_2/include/CGAL/Arr_dcel_base.h

@@ -1090,7 +1090,7 @@ public:
   {
     Vertex* v = vertex_alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Vertex_allocator>::construct(vertex_alloc,v, Vertex());
+    std::allocator_traits<Vertex_allocator>::construct(vertex_alloc,v);
 #else    
     vertex_alloc.construct(v, Vertex());
 #endif
@@ -1117,7 +1117,7 @@ public:
   {
     Face* f = face_alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Face_allocator>::construct(face_alloc, f, Face());
+    std::allocator_traits<Face_allocator>::construct(face_alloc, f);
 #else
     face_alloc.construct(f, Face());
 #endif    
@@ -1130,7 +1130,7 @@ public:
   {
     Outer_ccb* oc = out_ccb_alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Outer_ccb_allocator>::construct(out_ccb_alloc, oc, Outer_ccb());
+    std::allocator_traits<Outer_ccb_allocator>::construct(out_ccb_alloc, oc);
 #else
     out_ccb_alloc.construct(oc, Outer_ccb());
 #endif    
@@ -1143,7 +1143,7 @@ public:
   {
     Inner_ccb* ic = in_ccb_alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Inner_ccb_allocator>::construct(in_ccb_alloc, ic, Inner_ccb());
+    std::allocator_traits<Inner_ccb_allocator>::construct(in_ccb_alloc, ic);
 #else
     in_ccb_alloc.construct(ic, Inner_ccb());
 #endif    
@@ -1156,7 +1156,7 @@ public:
   {
     Isolated_vertex* iv = iso_vert_alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Iso_vert_allocator>::construct(iso_vert_alloc, iv, Isolated_vertex());
+    std::allocator_traits<Iso_vert_allocator>::construct(iso_vert_alloc, iv);
 #else
     iso_vert_alloc.construct(iv, Isolated_vertex());
 #endif

HalfedgeDS/include/CGAL/HalfedgeDS_list.h

@@ -292,7 +292,7 @@ protected:
         // creates a new pair of opposite border halfedges.
         Halfedge_pair* hpair = edge_allocator.allocate(1);
 #ifdef CGAL_CXX11
-        std::allocator_traits<Edge_allocator>::construct(edge_allocator, hpair, Halfedge_pair( h, g));
+        std::allocator_traits<Edge_allocator>::construct(edge_allocator, hpair, h, g);
 #else        
         edge_allocator.construct(hpair, Halfedge_pair( h, g));
 #endif

Hash_map/include/CGAL/Tools/chained_map.h

@@ -163,7 +163,7 @@ void chained_map<T, Allocator>::init_table(std::size_t t)
   for (std::size_t i = 0 ; i < t + t/2 ; ++i){
 #ifdef CGAL_CXX11
     typedef std::allocator_traits<Allocator> Allocator_traits;
-    std::allocator_traits<allocator_type>::construct(alloc,table + i, chained_map_elem<T>());
+    std::allocator_traits<allocator_type>::construct(alloc,table + i);
 #else    
     alloc.construct(table + i, chained_map_elem<T>());
 #endif

Nef_3/include/CGAL/Nef_3/SNC_structure.h

@@ -1052,7 +1052,7 @@ public:
   Vertex* get_vertex_node( const Vertex& ) {
     Vertex* p = vertex_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Vertex_alloc>::construct(vertex_allocator, p, Vertex());
+    std::allocator_traits<Vertex_alloc>::construct(vertex_allocator, p);
 #else
     vertex_allocator.construct( p, Vertex());
 #endif
@@ -1071,7 +1071,7 @@ public:
   Halfedge* get_halfedge_node( const Halfedge&) {
     Halfedge* p = halfedge_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Halfedge_alloc>::construct(halfedge_allocator, p, Halfedge());
+    std::allocator_traits<Halfedge_alloc>::construct(halfedge_allocator, p);
 #else
     halfedge_allocator.construct( p, Halfedge());
 #endif
@@ -1090,7 +1090,7 @@ public:
   Halffacet* get_halffacet_node( const Halffacet& ) {
     Halffacet* p = halffacet_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Halffacet_alloc>::construct(halffacet_allocator, p, Halffacet());
+    std::allocator_traits<Halffacet_alloc>::construct(halffacet_allocator, p);
 #else
     halffacet_allocator.construct( p, Halffacet());
 #endif
@@ -1109,7 +1109,7 @@ public:
   Volume* get_volume_node( const Volume& ) {
     Volume* p = volume_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<Volume_alloc>::construct(volume_allocator, p, Volume());
+    std::allocator_traits<Volume_alloc>::construct(volume_allocator, p);
 #else
     volume_allocator.construct( p, Volume());
 #endif
@@ -1128,7 +1128,7 @@ public:
   SHalfedge* get_shalfedge_node( const SHalfedge& ) {
     SHalfedge* p = shalfedge_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<SHalfedge_alloc>::construct(shalfedge_allocator, p, SHalfedge());
+    std::allocator_traits<SHalfedge_alloc>::construct(shalfedge_allocator, p);
 #else
     shalfedge_allocator.construct( p, SHalfedge());
 #endif
@@ -1147,7 +1147,7 @@ public:
   SHalfloop* get_shalfloop_node( const SHalfloop& ) {
     SHalfloop* p = shalfloop_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<SHalfloop_alloc>::construct(shalfloop_allocator, p, SHalfloop());
+    std::allocator_traits<SHalfloop_alloc>::construct(shalfloop_allocator, p);
 #else
     shalfloop_allocator.construct( p, SHalfloop());
 #endif
@@ -1166,7 +1166,7 @@ public:
   SFace* get_sface_node( const SFace& ) {
     SFace* p = sface_allocator.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<SFace_alloc>::construct(sface_allocator, p, SFace());
+    std::allocator_traits<SFace_alloc>::construct(sface_allocator, p);
 #else
     sface_allocator.construct( p, SFace());
  #endif

Union_find/include/CGAL/Union_find.h

@@ -223,7 +223,7 @@ typename Union_find<T,A>::handle Union_find<T,A>::make_set(const T& x) {
     pointer tmp = m_first;
     m_first = alloc.allocate(1);
 #ifdef CGAL_CXX11
-    std::allocator_traits<allocator>::construct(alloc, m_first, Union_find_struct(tmp,x));
+    std::allocator_traits<allocator>::construct(alloc, m_first, tmp, x);
 #else
     alloc.construct( m_first, Union_find_struct(tmp,x));
 #endif