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Fix compilation with Clang on host GCC < 5 (old libstdc++)
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@ -14,6 +14,9 @@ v2.3.0 (Not yet released)
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v2.2.1 (Not yet released)
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-----------------------------------------------------
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* Fixed compilation with Clang on host GCC < 5 (old libstdc++ which isn't fully
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C++11 compliant). `#1062 <https://github.com/pybind/pybind11/pull/1062>`_.
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* Fixed a regression where the ``py::keep_alive`` policy could not be applied
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to constructors. `#1065 <https://github.com/pybind/pybind11/pull/1065>`_.
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@ -288,7 +288,9 @@ template <typename T> using remove_all_extents_t = typename array_info<T>::type;
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template <typename T> using is_pod_struct = all_of<
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std::is_standard_layout<T>, // since we're accessing directly in memory we need a standard layout type
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#if !defined(__GNUG__) || defined(__clang__) || __GNUC__ >= 5
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#if !defined(__GNUG__) || defined(_LIBCPP_VERSION) || defined(_GLIBCXX_USE_CXX11_ABI)
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// _GLIBCXX_USE_CXX11_ABI indicates that we're using libstdc++ from GCC 5 or newer, independent
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// of the actual compiler (Clang can also use libstdc++, but it always defines __GNUC__ == 4).
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std::is_trivially_copyable<T>,
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#else
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// GCC 4 doesn't implement is_trivially_copyable, so approximate it
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