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Work around MSVC failures in variant_derived_construct2. Refs #43.

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Peter Dimov
2024-03-24 19:16:09 +02:00
parent a936eae01b
commit f0acc9326e
1 changed files with 10 additions and 0 deletions
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10
include/boost/variant2/variant.hpp
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@ -1634,7 +1634,17 @@ public:
template<class U,
class Ud = typename std::decay<U>::type,
class E1 = typename std::enable_if< !std::is_same<Ud, variant>::value && !std::is_base_of<variant, Ud>::value && !detail::is_in_place_index<Ud>::value && !detail::is_in_place_type<Ud>::value >::type,
#if BOOST_WORKAROUND(BOOST_MSVC, < 1940)
class V = mp11::mp_apply_q< mp11::mp_bind_front<detail::resolve_overload_type, U&&>, variant >,
#else
class V = detail::resolve_overload_type<U&&, T...>,
#endif
class E2 = typename std::enable_if<std::is_constructible<V, U&&>::value>::type
>
constexpr variant( U&& u )