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Remove __has_extension checks for features that are not available as extensions.

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For those features, `__has_extension` checks are equivalent to `__has_feature` checks and thus they are unnecessary.
This commit is contained in:
morinmorin
2014-10-26 21:06:49 +09:00
parent 22be8fffcf
commit 70096c5d80
1 changed files with 6 additions and 7 deletions
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13
include/boost/config/compiler/clang.hpp
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@ -189,7 +189,7 @@
# define BOOST_NO_CXX11_USER_DEFINED_LITERALS
#endif
#if !(__has_feature(cxx_alignas) || __has_extension(cxx_alignas))
#if !__has_feature(cxx_alignas)
# define BOOST_NO_CXX11_ALIGNAS
#endif
@ -209,11 +209,11 @@
# define BOOST_NO_CXX14_BINARY_LITERALS
#endif
#if !(__has_feature(__cxx_decltype_auto__) || __has_extension(__cxx_decltype_auto__))
#if !__has_feature(__cxx_decltype_auto__)
# define BOOST_NO_CXX14_DECLTYPE_AUTO
#endif
#if !(__has_feature(__cxx_aggregate_nsdmi__) || __has_extension(__cxx_aggregate_nsdmi__))
#if !__has_feature(__cxx_aggregate_nsdmi__)
# define BOOST_NO_CXX14_AGGREGATE_NSDMI
#endif
@ -221,7 +221,7 @@
# define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
#endif
#if !(__has_feature(__cxx_generic_lambdas__) || __has_extension(__cxx_generic_lambdas__))
#if !__has_feature(__cxx_generic_lambdas__)
# define BOOST_NO_CXX14_GENERIC_LAMBDAS
#endif
@ -239,12 +239,11 @@
// so instead verify that we have a feature that was introduced at the same time as working C++14
// constexpr (generic lambda's in this case):
//
#if !__has_feature(__cxx_generic_lambdas__) \
|| !(__has_feature(__cxx_relaxed_constexpr__) || __has_extension(__cxx_relaxed_constexpr__))
#if !__has_feature(__cxx_generic_lambdas__) || !__has_feature(__cxx_relaxed_constexpr__)
# define BOOST_NO_CXX14_CONSTEXPR
#endif
#if !(__has_feature(__cxx_return_type_deduction__) || __has_extension(__cxx_return_type_deduction__))
#if !__has_feature(__cxx_return_type_deduction__)
# define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
#endif