1 files changed, 0 insertions, 96 deletions
diff --git a/libcxx/include/__utility/transaction.h b/libcxx/include/__utility/transaction.h
deleted file mode 100644
index e2cc43820845..000000000000
--- a/libcxx/include/__utility/transaction.h
+++ /dev/null
@@ -1,96 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___UTILITY_TRANSACTION_H
-#define _LIBCPP___UTILITY_TRANSACTION_H
-
-#include <__config>
-#include <__utility/exchange.h>
-#include <__utility/move.h>
-#include <type_traits>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-// __transaction is a helper class for writing code with the strong exception guarantee.
-//
-// When writing code that can throw an exception, one can store rollback instructions in a
-// transaction so that if an exception is thrown at any point during the lifetime of the
-// transaction, it will be rolled back automatically. When the transaction is done, one
-// must mark it as being complete so it isn't rolled back when the transaction is destroyed.
-//
-// Transactions are not default constructible, they can't be copied or assigned to, but
-// they can be moved around for convenience.
-//
-// __transaction can help greatly simplify code that would normally be cluttered by
-// `#if _LIBCPP_NO_EXCEPTIONS`. For example:
-//
-//    template <class Iterator, class Size, class OutputIterator>
-//    Iterator uninitialized_copy_n(Iterator iter, Size n, OutputIterator out) {
-//        typedef typename iterator_traits<Iterator>::value_type value_type;
-//        __transaction transaction([start=out, &out] {
-//            std::destroy(start, out);
-//        });
-//
-//        for (; n > 0; ++iter, ++out, --n) {
-//            ::new ((void*)std::addressof(*out)) value_type(*iter);
-//        }
-//        transaction.__complete();
-//        return out;
-//    }
-//
-template <class _Rollback>
-struct __transaction {
-    __transaction() = delete;
-
-    _LIBCPP_HIDE_FROM_ABI
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 explicit __transaction(_Rollback __rollback)
-        : __rollback_(_VSTD::move(__rollback))
-        , __completed_(false)
-    { }
-
-    _LIBCPP_HIDE_FROM_ABI
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 __transaction(__transaction&& __other)
-        _NOEXCEPT_(is_nothrow_move_constructible<_Rollback>::value)
-        : __rollback_(_VSTD::move(__other.__rollback_))
-        , __completed_(__other.__completed_)
-    {
-        __other.__completed_ = true;
-    }
-
-    __transaction(__transaction const&) = delete;
-    __transaction& operator=(__transaction const&) = delete;
-    __transaction& operator=(__transaction&&) = delete;
-
-    _LIBCPP_HIDE_FROM_ABI
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 void __complete() _NOEXCEPT {
-        __completed_ = true;
-    }
-
-    _LIBCPP_HIDE_FROM_ABI
-    _LIBCPP_CONSTEXPR_AFTER_CXX17 ~__transaction() {
-        if (!__completed_)
-            __rollback_();
-    }
-
-private:
-    _Rollback __rollback_;
-    bool __completed_;
-};
-
-template <class _Rollback>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR __transaction<_Rollback> __make_transaction(_Rollback __rollback) {
-  return __transaction<_Rollback>(std::move(__rollback));
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-#endif // _LIBCPP___UTILITY_TRANSACTION_H