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Add _LIBCPP_PLACEMENT_NEW_DEFINED macro to allow for user defined placement new operators #70538

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Add _LIBCPP_PLACEMENT_NEW_DEFINED macro to allow for user defined placement new operators #70538

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9 changes: 8 additions & 1 deletion libcxx/include/new
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Original file line number Diff line number Diff line change
Expand Up @@ -248,10 +248,17 @@ _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void operato
#endif
#endif

#ifndef _LIBCPP_PLACEMENT_NEW_DEFINED
#define _LIBCPP_PLACEMENT_NEW_DEFINED
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new (std::size_t, void* __p) _NOEXCEPT {return __p;}
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
inline _LIBCPP_INLINE_VISIBILITY void operator delete (void*, void*) _NOEXCEPT {}
#endif

#ifndef _LIBCPP_PLACEMENT_ARRAY_NEW_DEFINED
#define _LIBCPP_PLACEMENT_ARRAY_NEW_DEFINED
_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void*, void*) _NOEXCEPT {}
#endif

#endif // !_LIBCPP_ABI_VCRUNTIME

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