[cleanup] Remove check for rvalue references.

cmake/modules/CheckCXX11Features.cmake

@@ -9,7 +9,6 @@
 # HAS_ATTRIBUTE_DEPRECATED         True if attribute deprecated is supported
 # HAS_ATTRIBUTE_DEPRECATED_MSG     True if attribute deprecated("msg") is supported
 # HAVE_INTEGRAL_CONSTANT           True if compiler supports integral_constant
-# HAVE_RVALUE_REFERENCES           True if rvalue references are supported
 # HAVE_CONSTEXPR                   True if constexpr is supported
 # HAVE_KEYWORD_FINAL               True if final is supported.
 
@@ -181,28 +180,6 @@ check_cxx_source_compiles("
 "  HAS_ATTRIBUTE_DEPRECATED_MSG
 )
 
-# rvalue references
-check_cxx_source_compiles("
-  #include <cassert>
-  #include <utility>
-  int foo(int&& x) { return 1; }
-  int foo(const int& x) { return -1; }
-
-  template<typename T>
-  int forward(T&& x)
-  {
-    return foo(std::forward<T>(x));
-  }
-
-  int main(void)
-  {
-    int i = 0;
-    assert( forward(i) + forward(int(2)) == 0);
-    return 0;
-  }
-" HAVE_RVALUE_REFERENCES
-)
-
 # constexpr
 check_cxx_source_compiles("
   constexpr int foo()

config.h.cmake

@@ -124,9 +124,6 @@
 
 /* end private */
 
-/* Define to 1 if rvalue references are supported */
-#cmakedefine HAVE_RVALUE_REFERENCES 1
-
 /* Define to 1 if C++11 constexpr is supported */
 #cmakedefine HAVE_CONSTEXPR 1
 

dune/common/array.hh

@@ -129,11 +129,7 @@ namespace Dune
   {
     array<T,n> r;
     r.fill(t);
-#if HAVE_RVALUE_REFERENCES
     return std::move(r);
-#else
-    return r;
-#endif
   }
 
   /** @} */

dune/common/debugallocator.hh

@@ -277,14 +277,14 @@ namespace Dune
     {
       ::new((void*)p)T(val);
     }
-#if HAVE_RVALUE_REFERENCES || DOXYGEN
+
     //! construct an object of type T from variadic parameters
     template<typename ... _Args>
     void construct(pointer p, _Args&&... __args)
     {
       ::new((void *)p)T(std::forward<_Args>(__args) ...);
     }
-#endif
+
     //! destroy an object of type T (i.e. call the destructor)
     void destroy(pointer p)
     {

dune/common/mallocallocator.hh

@@ -82,14 +82,14 @@ namespace Dune
     {
       ::new((void*)p)T(val);
     }
-#if HAVE_RVALUE_REFERENCES || DOXYGEN
+
     //! construct an object of type T from variadic parameters
     template<typename ... _Args>
     void construct(pointer p, _Args&&... __args)
     {
       ::new((void *)p)T(std::forward<_Args>(__args) ...);
     }
-#endif
+
     //! destroy an object of type T (i.e. call the destructor)
     void destroy(pointer p)
     {

dune/common/test/typetraitstest.cc

@@ -24,9 +24,7 @@ int main() {
   // Test TypeTraits::isReference
   assert( not Dune::TypeTraits<int>::isReference );
   assert(     Dune::TypeTraits<int&>::isReference );
-#if HAVE_RVALUE_REFERENCES
   assert( not Dune::TypeTraits<int&&>::isReference );
-#endif
 
   // Test TypeTraits::PointeeType
   assert( (Dune::is_same<Dune::Empty, Dune::TypeTraits<int>::PointeeType>::value) );
@@ -48,9 +46,7 @@ int main() {
   // Test is_reference
   assert( not Dune::is_lvalue_reference<int>::value );
   assert(     Dune::is_lvalue_reference<int&>::value );
-#if HAVE_RVALUE_REFERENCES
   assert( not Dune::is_lvalue_reference<int&&>::value );
-#endif
 
   // Test remove_pointer
   // Note: when the argument T is not a pointer, TypeTraits::PointeeType returns Dune::Empty,
@@ -64,9 +60,7 @@ int main() {
   // Test remove_reference
   assert( (Dune::is_same<int, Dune::remove_reference<int>::type>::value) );
   assert( (Dune::is_same<int, Dune::remove_reference<int&>::type>::value) );
-#if HAVE_RVALUE_REFERENCES
   assert( (Dune::is_same<int, Dune::remove_reference<int&&>::type>::value) );
-#endif
 
   return 0;
 }

m4/CMakeLists.txt

@@ -8,7 +8,6 @@ install(PROGRAMS
         ax_lang_compiler_ms.m4
         boost_fusion.m4
         cxx0x_compiler.m4
-        cxx0x_rvaluereference.m4
         cxx0x_nullptr.m4
         cxx11_constexpr.m4
         cxx11_final.m4

m4/Makefile.am

@@ -11,7 +11,6 @@ ALLM4S = 					\
 	ax_lang_compiler_ms.m4			\
 	boost_fusion.m4				\
 	cxx0x_compiler.m4			\
-	cxx0x_rvaluereference.m4		\
 	cxx0x_nullptr.m4			\
 	cxx11_constexpr.m4			\
 	cxx11_final.m4				\

m4/cxx0x_rvaluereference.m4

-# tests compiler support for C++0x rvalue references
-# the associated macro is called HAVE_RVALUE_REFERENCES
-
-AC_DEFUN([RVALUE_REFERENCES_CHECK],[
-  AC_CACHE_CHECK([whether rvalue references are supported], dune_cv_rvalue_references_support, [
-    AC_REQUIRE([AC_PROG_CXX])
-    AC_REQUIRE([GXX0X])
-    AC_LANG_PUSH([C++])
-    AC_RUN_IFELSE([
-      AC_LANG_PROGRAM([#include<cassert>
-        #include <utility>
-        int foo(int&& x) { return 1; }
-        int foo(const int& x) { return -1; }
-
-        template<typename T>
-        int forward(T&& x)
-        {
-            return foo(std::forward<T>(x));
-        }], 
-        [
-          int i = 0;
-          assert( forward(i) + forward(int(2)) == 0);
-          return 0;
-        ])],
-      dune_cv_rvalue_references_support=yes,
-      dune_cv_rvalue_references_support=no)
-      AC_LANG_POP
-  ])
-  if test "x$dune_cv_rvalue_references_support" = xyes; then
-    AC_DEFINE(HAVE_RVALUE_REFERENCES, 1, [Define to 1 if rvalue references are supported])
-  fi
-])

m4/dune_common.m4

@@ -20,7 +20,6 @@ AC_DEFUN([DUNE_COMMON_CHECKS],
   AC_REQUIRE([DUNE_CHECK_COMPILER])
   AC_REQUIRE([GXX0X])
   AC_REQUIRE([NULLPTR_CHECK])
-  AC_REQUIRE([RVALUE_REFERENCES_CHECK])
   AC_REQUIRE([CXX11_CONSTEXPR_CHECK])
   AC_REQUIRE([DUNE_BOOST_BASE])
   AC_REQUIRE([DUNE_LINKCXX])