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Avoid potentially ambiguous span copy constructor

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Chris Robinson
2019-05-30 10:06:12 -07:00
parent 153f133435
commit 1961828d0b
1 changed files with 2 additions and 2 deletions
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common/alspan.h
+2 -2
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@@ -116,7 +116,7 @@ public:
constexpr span(U &cont) : span{al::data(cont), al::size(cont)} { }
template<typename U, REQUIRES(IS_VALID_CONTAINER(U))>
constexpr span(const U &cont) : span{al::data(cont), al::size(cont)} { }
template<typename U, size_t N, REQUIRES(extent == N && std::is_convertible<U(*)[],element_type(*)[]>::value)>
template<typename U, size_t N, REQUIRES(!std::is_same<element_type,U>::value && extent == N && std::is_convertible<U(*)[],element_type(*)[]>::value)>
constexpr span(const span<U,N> &span_) noexcept : span{al::data(span_), al::size(span_)} { }
constexpr span(const span&) noexcept = default;
@@ -210,7 +210,7 @@ public:
constexpr span(U &cont) : span{al::data(cont), al::size(cont)} { }
template<typename U, REQUIRES(IS_VALID_CONTAINER(U))>
constexpr span(const U &cont) : span{al::data(cont), al::size(cont)} { }
template<typename U, size_t N, REQUIRES(std::is_convertible<U(*)[],element_type(*)[]>::value)>
template<typename U, size_t N, REQUIRES((!std::is_same<element_type,U>::value || extent != N) && std::is_convertible<U(*)[],element_type(*)[]>::value)>
constexpr span(const span<U,N> &span_) noexcept : span{al::data(span_), al::size(span_)} { }
constexpr span(const span&) noexcept = default;