[libcxx] r239664 - [libcxx] Fix detection of __is_final.
Eric Fiselier
eric at efcs.ca
Sat Jun 13 00:08:02 PDT 2015
Author: ericwf
Date: Sat Jun 13 02:08:02 2015
New Revision: 239664
URL: http://llvm.org/viewvc/llvm-project?rev=239664&view=rev
Log:
[libcxx] Fix detection of __is_final.
Summary: Currently we only enable the use of __is_final(...) with Clang. GCC also provides __is_final(...) since 4.7 in all standard modes. This patch creates the macro _LIBCPP_HAS_IS_FINAL to note the availability of `__is_final`.
Reviewers: danalbert, mclow.lists
Reviewed By: mclow.lists
Subscribers: cfe-commits
Differential Revision: http://reviews.llvm.org/D8795
Modified:
libcxx/trunk/include/__config
libcxx/trunk/include/exception
libcxx/trunk/include/ext/hash_map
libcxx/trunk/include/map
libcxx/trunk/include/memory
libcxx/trunk/include/tuple
libcxx/trunk/include/type_traits
libcxx/trunk/include/unordered_map
Modified: libcxx/trunk/include/__config
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/__config?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/__config (original)
+++ libcxx/trunk/include/__config Sat Jun 13 02:08:02 2015
@@ -77,10 +77,8 @@
#ifdef _WIN32
# define _LIBCPP_LITTLE_ENDIAN 1
# define _LIBCPP_BIG_ENDIAN 0
-// Compiler intrinsics (GCC or MSVC)
-# if defined(__clang__) \
- || (defined(_MSC_VER) && _MSC_VER >= 1400) \
- || (defined(__GNUC__) && _GNUC_VER > 403)
+// Compiler intrinsics (MSVC)
+#if defined(_MSC_VER) && _MSC_VER >= 1400
# define _LIBCPP_HAS_IS_BASE_OF
# endif
# if defined(_MSC_VER) && !defined(__clang__)
@@ -95,12 +93,6 @@
# endif
#endif // _WIN32
-#ifdef __linux__
-# if defined(__GNUC__) && _GNUC_VER >= 403
-# define _LIBCPP_HAS_IS_BASE_OF
-# endif
-#endif
-
#ifdef __sun__
# include <sys/isa_defs.h>
# ifdef _LITTLE_ENDIAN
@@ -320,6 +312,10 @@ typedef __char32_t char32_t;
# define _LIBCPP_HAS_IS_BASE_OF
#endif
+#if __has_feature(is_final)
+# define _LIBCPP_HAS_IS_FINAL
+#endif
+
// Objective-C++ features (opt-in)
#if __has_feature(objc_arc)
#define _LIBCPP_HAS_OBJC_ARC
@@ -403,6 +399,11 @@ namespace std {
#if _GNUC_VER >= 407
#define _LIBCPP_UNDERLYING_TYPE(T) __underlying_type(T)
#define _LIBCPP_IS_LITERAL(T) __is_literal_type(T)
+#define _LIBCPP_HAS_IS_FINAL
+#endif
+
+#if defined(__GNUC__) && _GNUC_VER >= 403
+# define _LIBCPP_HAS_IS_BASE_OF
#endif
#if !__EXCEPTIONS
@@ -537,6 +538,7 @@ namespace std {
#define _LIBCPP_HAS_NO_NULLPTR
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_IS_BASE_OF
+#define _LIBCPP_HAS_IS_FINAL
#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
#if defined(_AIX)
Modified: libcxx/trunk/include/exception
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/exception?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/exception (original)
+++ libcxx/trunk/include/exception Sat Jun 13 02:08:02 2015
@@ -195,9 +195,7 @@ void
throw_with_nested(_Tp&& __t, typename enable_if<
is_class<typename remove_reference<_Tp>::type>::value &&
!is_base_of<nested_exception, typename remove_reference<_Tp>::type>::value
-#if _LIBCPP_STD_VER > 11 && __has_feature(is_final)
- && !is_final<typename remove_reference<_Tp>::type>::value
-#endif
+ && !__libcpp_is_final<typename remove_reference<_Tp>::type>::value
>::type* = 0)
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested (_Tp& __t, typename enable_if<
@@ -217,9 +215,7 @@ void
throw_with_nested(_Tp&& __t, typename enable_if<
!is_class<typename remove_reference<_Tp>::type>::value ||
is_base_of<nested_exception, typename remove_reference<_Tp>::type>::value
-#if _LIBCPP_STD_VER > 11 && __has_feature(is_final)
- || is_final<typename remove_reference<_Tp>::type>::value
-#endif
+ || __libcpp_is_final<typename remove_reference<_Tp>::type>::value
>::type* = 0)
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
throw_with_nested (_Tp& __t, typename enable_if<
Modified: libcxx/trunk/include/ext/hash_map
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/ext/hash_map?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/ext/hash_map (original)
+++ libcxx/trunk/include/ext/hash_map Sat Jun 13 02:08:02 2015
@@ -203,6 +203,7 @@ template <class Key, class T, class Hash
#include <__hash_table>
#include <functional>
#include <stdexcept>
+#include <type_traits>
#include <ext/__hash>
#if __DEPRECATED
@@ -213,16 +214,16 @@ template <class Key, class T, class Hash
#endif
#endif
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
+#endif
namespace __gnu_cxx {
using namespace std;
-template <class _Tp, class _Hash, bool = is_empty<_Hash>::value
-#if __has_feature(is_final)
- && !__is_final(_Hash)
-#endif
+template <class _Tp, class _Hash,
+ bool = is_empty<_Hash>::value && !__libcpp_is_final<_Hash>::value
>
class __hash_map_hasher
: private _Hash
@@ -255,10 +256,8 @@ public:
{return __hash_(__x);}
};
-template <class _Tp, class _Pred, bool = is_empty<_Pred>::value
-#if __has_feature(is_final)
- && !__is_final(_Pred)
-#endif
+template <class _Tp, class _Pred,
+ bool = is_empty<_Pred>::value && !__libcpp_is_final<_Pred>::value
>
class __hash_map_equal
: private _Pred
Modified: libcxx/trunk/include/map
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/map?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/map (original)
+++ libcxx/trunk/include/map Sat Jun 13 02:08:02 2015
@@ -428,6 +428,7 @@ swap(multimap<Key, T, Compare, Allocator
#include <utility>
#include <functional>
#include <initializer_list>
+#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
@@ -435,10 +436,8 @@ swap(multimap<Key, T, Compare, Allocator
_LIBCPP_BEGIN_NAMESPACE_STD
-template <class _Key, class _CP, class _Compare, bool = is_empty<_Compare>::value
-#if __has_feature(is_final)
- && !__is_final(_Compare)
-#endif
+template <class _Key, class _CP, class _Compare,
+ bool = is_empty<_Compare>::value && !__libcpp_is_final<_Compare>::value
>
class __map_value_compare
: private _Compare
Modified: libcxx/trunk/include/memory
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/memory?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/memory (original)
+++ libcxx/trunk/include/memory Sat Jun 13 02:08:02 2015
@@ -1982,14 +1982,9 @@ public:
template <class _T1, class _T2, bool = is_same<typename remove_cv<_T1>::type,
typename remove_cv<_T2>::type>::value,
bool = is_empty<_T1>::value
-#if __has_feature(is_final)
- && !__is_final(_T1)
-#endif
- ,
+ && !__libcpp_is_final<_T1>::value,
bool = is_empty<_T2>::value
-#if __has_feature(is_final)
- && !__is_final(_T2)
-#endif
+ && !__libcpp_is_final<_T2>::value
>
struct __libcpp_compressed_pair_switch;
Modified: libcxx/trunk/include/tuple
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/tuple?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/tuple (original)
+++ libcxx/trunk/include/tuple Sat Jun 13 02:08:02 2015
@@ -161,10 +161,8 @@ using tuple_element_t = typename tuple_e
// __tuple_leaf
-template <size_t _Ip, class _Hp, bool=is_empty<_Hp>::value
-#if __has_feature(is_final)
- && !__is_final(_Hp)
-#endif
+template <size_t _Ip, class _Hp,
+ bool=is_empty<_Hp>::value && !__libcpp_is_final<_Hp>::value
>
class __tuple_leaf;
Modified: libcxx/trunk/include/type_traits
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/type_traits?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/type_traits (original)
+++ libcxx/trunk/include/type_traits Sat Jun 13 02:08:02 2015
@@ -803,8 +803,16 @@ template <class _Tp> struct _LIBCPP_TYPE
// is_final
-#if _LIBCPP_STD_VER > 11 && __has_feature(is_final)
-template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
+#if defined(_LIBCPP_HAS_IS_FINAL)
+template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
+__libcpp_is_final : public integral_constant<bool, __is_final(_Tp)> {};
+#else
+template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
+__libcpp_is_final : public false_type {};
+#endif
+
+#if defined(_LIBCPP_HAS_IS_FINAL) && _LIBCPP_STD_VER > 11
+template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY
is_final : public integral_constant<bool, __is_final(_Tp)> {};
#endif
Modified: libcxx/trunk/include/unordered_map
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/unordered_map?rev=239664&r1=239663&r2=239664&view=diff
==============================================================================
--- libcxx/trunk/include/unordered_map (original)
+++ libcxx/trunk/include/unordered_map Sat Jun 13 02:08:02 2015
@@ -361,10 +361,8 @@ template <class Key, class T, class Hash
_LIBCPP_BEGIN_NAMESPACE_STD
-template <class _Key, class _Cp, class _Hash, bool = is_empty<_Hash>::value
-#if __has_feature(is_final)
- && !__is_final(_Hash)
-#endif
+template <class _Key, class _Cp, class _Hash,
+ bool = is_empty<_Hash>::value && !__libcpp_is_final<_Hash>::value
>
class __unordered_map_hasher
: private _Hash
@@ -412,10 +410,8 @@ public:
{return __hash_(__x);}
};
-template <class _Key, class _Cp, class _Pred, bool = is_empty<_Pred>::value
-#if __has_feature(is_final)
- && !__is_final(_Pred)
-#endif
+template <class _Key, class _Cp, class _Pred,
+ bool = is_empty<_Pred>::value && !__libcpp_is_final<_Pred>::value
>
class __unordered_map_equal
: private _Pred
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