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Fix issue #1805

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* Add some restriction on pair partial specialization of to_json

Signed-off-by: Camille Bégué <camille.begue.pro@gmail.com>
This commit is contained in:
Camille Bégué 2019-10-21 17:50:15 +02:00 • committed by Camille Bégué
parent 0245ae5157
commit 794a3d411a
3 changed files with 20 additions and 4 deletions
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4
single_include/nlohmann/json.hpp
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@ -3733,8 +3733,8 @@ void to_json(BasicJsonType& j, const T(&arr)[N])
external_constructor<value_t::array>::construct(j, arr);
}
template<typename BasicJsonType, typename... Args>
void to_json(BasicJsonType& j, const std::pair<Args...>& p)
template < typename BasicJsonType, typename T1, typename T2, enable_if_t < std::is_constructible<BasicJsonType, T1>::value&& std::is_constructible<BasicJsonType, T2>::value, int > = 0 >
void to_json(BasicJsonType& j, const std::pair<T1, T2>& p)
{
j = { p.first, p.second };
}