[libcxx-commits] [libcxx] r368885 - This commit removes std::shared_ptr::make_shared and std::shared_ptr::allocate_shared as they are not part of the standard. This commit also adds the helper function "__create_with_cntrl_block" which std::allocate_shared and std::make_shared have been updated to use.
Zoe Carver via libcxx-commits
libcxx-commits at lists.llvm.org
Wed Aug 14 10:19:26 PDT 2019
Author: zoecarver
Date: Wed Aug 14 10:19:25 2019
New Revision: 368885
URL: http://llvm.org/viewvc/llvm-project?rev=368885&view=rev
Log:
This commit removes std::shared_ptr::make_shared and std::shared_ptr::allocate_shared as they are not part of the standard. This commit also adds the helper function "__create_with_cntrl_block" which std::allocate_shared and std::make_shared have been updated to use.
Modified:
libcxx/trunk/include/memory
Modified: libcxx/trunk/include/memory
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/memory?rev=368885&r1=368884&r2=368885&view=diff
==============================================================================
--- libcxx/trunk/include/memory (original)
+++ libcxx/trunk/include/memory Wed Aug 14 10:19:25 2019
@@ -3831,48 +3831,16 @@ public:
: nullptr);}
#endif // _LIBCPP_NO_RTTI
-#ifndef _LIBCPP_HAS_NO_VARIADICS
-
- template<class ..._Args>
- static
- shared_ptr<_Tp>
- make_shared(_Args&& ...__args);
-
- template<class _Alloc, class ..._Args>
- static
- shared_ptr<_Tp>
- allocate_shared(const _Alloc& __a, _Args&& ...__args);
-
-#else // _LIBCPP_HAS_NO_VARIADICS
-
- static shared_ptr<_Tp> make_shared();
-
- template<class _A0>
- static shared_ptr<_Tp> make_shared(_A0&);
-
- template<class _A0, class _A1>
- static shared_ptr<_Tp> make_shared(_A0&, _A1&);
-
- template<class _A0, class _A1, class _A2>
- static shared_ptr<_Tp> make_shared(_A0&, _A1&, _A2&);
-
- template<class _Alloc>
- static shared_ptr<_Tp>
- allocate_shared(const _Alloc& __a);
-
- template<class _Alloc, class _A0>
- static shared_ptr<_Tp>
- allocate_shared(const _Alloc& __a, _A0& __a0);
-
- template<class _Alloc, class _A0, class _A1>
- static shared_ptr<_Tp>
- allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1);
-
- template<class _Alloc, class _A0, class _A1, class _A2>
- static shared_ptr<_Tp>
- allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2);
-
-#endif // _LIBCPP_HAS_NO_VARIADICS
+ template<class _Yp, class _CntrlBlk>
+ static shared_ptr<_Tp>
+ __create_with_cntrl_block(_Yp* __p, _CntrlBlk* __cntrl)
+ {
+ shared_ptr<_Tp> __r;
+ __r.__ptr_ = __p;
+ __r.__cntrl_ = __cntrl;
+ __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
+ return __r;
+ }
private:
template <class _Yp, bool = is_function<_Yp>::value>
@@ -4186,206 +4154,6 @@ shared_ptr<_Tp>::shared_ptr(unique_ptr<_
__r.release();
}
-#ifndef _LIBCPP_HAS_NO_VARIADICS
-
-template<class _Tp>
-template<class ..._Args>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::make_shared(_Args&& ...__args)
-{
- static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in make_shared" );
- typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
- typedef allocator<_CntrlBlk> _A2;
- typedef __allocator_destructor<_A2> _D2;
- _A2 __a2;
- unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
- ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = __hold2.release();
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _Alloc, class ..._Args>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _Args&& ...__args)
-{
- static_assert( is_constructible<_Tp, _Args...>::value, "Can't construct object in allocate_shared" );
- typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
- typedef __allocator_destructor<_A2> _D2;
- _A2 __a2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
- ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
- _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-#else // _LIBCPP_HAS_NO_VARIADICS
-
-template<class _Tp>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::make_shared()
-{
- static_assert((is_constructible<_Tp>::value), "Can't construct object in make_shared" );
- typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
- typedef allocator<_CntrlBlk> _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2;
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(__hold2.get()) _CntrlBlk(__alloc2);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = __hold2.release();
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _A0>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::make_shared(_A0& __a0)
-{
- static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in make_shared" );
- typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
- typedef allocator<_CntrlBlk> _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2;
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = __hold2.release();
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _A0, class _A1>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1)
-{
- static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in make_shared" );
- typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
- typedef allocator<_CntrlBlk> _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2;
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = __hold2.release();
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _A0, class _A1, class _A2>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
-{
- static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in make_shared" );
- typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
- typedef allocator<_CntrlBlk> _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2;
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = __hold2.release();
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _Alloc>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::allocate_shared(const _Alloc& __a)
-{
- static_assert((is_constructible<_Tp>::value), "Can't construct object in allocate_shared" );
- typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
- _CntrlBlk(__a);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _Alloc, class _A0>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0)
-{
- static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in allocate_shared" );
- typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
- _CntrlBlk(__a, __a0);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _Alloc, class _A0, class _A1>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
-{
- static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in allocate_shared" );
- typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
- _CntrlBlk(__a, __a0, __a1);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-template<class _Tp>
-template<class _Alloc, class _A0, class _A1, class _A2>
-shared_ptr<_Tp>
-shared_ptr<_Tp>::allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
-{
- static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in allocate_shared" );
- typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
- typedef __allocator_destructor<_Alloc2> _D2;
- _Alloc2 __alloc2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
- ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
- _CntrlBlk(__a, __a0, __a1, __a2);
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __hold2.get()->get();
- __r.__cntrl_ = _VSTD::addressof(*__hold2.release());
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
-}
-
-#endif // _LIBCPP_HAS_NO_VARIADICS
-
template<class _Tp>
shared_ptr<_Tp>::~shared_ptr()
{
@@ -4578,7 +4346,17 @@ typename enable_if
>::type
make_shared(_Args&& ...__args)
{
- return shared_ptr<_Tp>::make_shared(_VSTD::forward<_Args>(__args)...);
+ static_assert(is_constructible<_Tp, _Args...>::value, "Can't construct object in make_shared");
+ typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
+ typedef allocator<_CntrlBlk> _A2;
+ typedef __allocator_destructor<_A2> _D2;
+
+ _A2 __a2;
+ unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
+ ::new(__hold2.get()) _CntrlBlk(__a2, _VSTD::forward<_Args>(__args)...);
+
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ __hold2.release());
}
template<class _Tp, class _Alloc, class ..._Args>
@@ -4590,73 +4368,145 @@ typename enable_if
>::type
allocate_shared(const _Alloc& __a, _Args&& ...__args)
{
- return shared_ptr<_Tp>::allocate_shared(__a, _VSTD::forward<_Args>(__args)...);
+ static_assert(is_constructible<_Tp, _Args...>::value, "Can't construct object in allocate_shared");
+
+ typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
+ typedef __allocator_destructor<_A2> _D2;
+
+ _A2 __a2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
+ ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
+ _CntrlBlk(__a, _VSTD::forward<_Args>(__args)...);
+
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ _VSTD::addressof(*__hold2.release()));
}
#else // _LIBCPP_HAS_NO_VARIADICS
template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
make_shared()
{
- return shared_ptr<_Tp>::make_shared();
+ static_assert((is_constructible<_Tp>::value), "Can't construct object in make_shared" );
+ typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
+ typedef allocator<_CntrlBlk> _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2;
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(__hold2.get()) _CntrlBlk(__alloc2);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ __hold2.release());
}
template<class _Tp, class _A0>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
make_shared(_A0& __a0)
{
- return shared_ptr<_Tp>::make_shared(__a0);
+ static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in make_shared" );
+ typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
+ typedef allocator<_CntrlBlk> _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2;
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ __hold2.release());
}
template<class _Tp, class _A0, class _A1>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
make_shared(_A0& __a0, _A1& __a1)
{
- return shared_ptr<_Tp>::make_shared(__a0, __a1);
+ static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in make_shared" );
+ typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
+ typedef allocator<_CntrlBlk> _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2;
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ __hold2.release());
}
template<class _Tp, class _A0, class _A1, class _A2>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
make_shared(_A0& __a0, _A1& __a1, _A2& __a2)
{
- return shared_ptr<_Tp>::make_shared(__a0, __a1, __a2);
+ static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in make_shared" );
+ typedef __shared_ptr_emplace<_Tp, allocator<_Tp> > _CntrlBlk;
+ typedef allocator<_CntrlBlk> _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2;
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(__hold2.get()) _CntrlBlk(__alloc2, __a0, __a1, __a2);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ __hold2.release());
}
template<class _Tp, class _Alloc>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
allocate_shared(const _Alloc& __a)
{
- return shared_ptr<_Tp>::allocate_shared(__a);
+ static_assert((is_constructible<_Tp>::value), "Can't construct object in allocate_shared" );
+ typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
+ _CntrlBlk(__a);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ _VSTD::addressof(*__hold2.release()));
}
template<class _Tp, class _Alloc, class _A0>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
allocate_shared(const _Alloc& __a, _A0& __a0)
{
- return shared_ptr<_Tp>::allocate_shared(__a, __a0);
+ static_assert((is_constructible<_Tp, _A0>::value), "Can't construct object in allocate_shared" );
+ typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
+ _CntrlBlk(__a, __a0);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ _VSTD::addressof(*__hold2.release()));
}
template<class _Tp, class _Alloc, class _A0, class _A1>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1)
{
- return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1);
+ static_assert((is_constructible<_Tp, _A0, _A1>::value), "Can't construct object in allocate_shared" );
+ typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
+ _CntrlBlk(__a, __a0, __a1);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ _VSTD::addressof(*__hold2.release()));
}
template<class _Tp, class _Alloc, class _A0, class _A1, class _A2>
-inline _LIBCPP_INLINE_VISIBILITY
shared_ptr<_Tp>
allocate_shared(const _Alloc& __a, _A0& __a0, _A1& __a1, _A2& __a2)
{
- return shared_ptr<_Tp>::allocate_shared(__a, __a0, __a1, __a2);
+ static_assert((is_constructible<_Tp, _A0, _A1, _A2>::value), "Can't construct object in allocate_shared" );
+ typedef __shared_ptr_emplace<_Tp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _Alloc2;
+ typedef __allocator_destructor<_Alloc2> _D2;
+ _Alloc2 __alloc2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__alloc2.allocate(1), _D2(__alloc2, 1));
+ ::new(static_cast<void*>(_VSTD::addressof(*__hold2.get())))
+ _CntrlBlk(__a, __a0, __a1, __a2);
+ return shared_ptr<_Tp>::__create_with_cntrl_block(__hold2.get()->get(),
+ _VSTD::addressof(*__hold2.release()));
}
#endif // _LIBCPP_HAS_NO_VARIADICS
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