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-rw-r--r--libcxx/include/memory11
1 files changed, 9 insertions, 2 deletions
diff --git a/libcxx/include/memory b/libcxx/include/memory
index 9d214beb68f..4ed33084d95 100644
--- a/libcxx/include/memory
+++ b/libcxx/include/memory
@@ -2668,10 +2668,17 @@ public:
: __ptr_(__u->release(), _VSTD::forward<deleter_type>(__u->get_deleter())) {}
template <class _Up, class _Ep>
- _LIBCPP_INLINE_VISIBILITY unique_ptr& operator=(unique_ptr<_Up, _Ep> __u)
+ _LIBCPP_INLINE_VISIBILITY
+ typename enable_if<
+ !is_array<_Up>::value &&
+ is_convertible<typename unique_ptr<_Up, _Ep>::pointer, pointer>::value &&
+ is_assignable<deleter_type&, _Ep&>::value,
+ unique_ptr&
+ >::type
+ operator=(unique_ptr<_Up, _Ep> __u)
{
reset(__u.release());
- __ptr_.second() = _VSTD::forward<deleter_type>(__u.get_deleter());
+ __ptr_.second() = _VSTD::forward<_Ep>(__u.get_deleter());
return *this;
}
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