diff options
| author | Chris Robinson <[email protected]> | 2019-05-30 10:06:12 -0700 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2019-05-30 10:06:12 -0700 |
| commit | 1961828d0bde4ea67b6a24a10f4fedacc88b6392 (patch) | |
| tree | c6845c493ef1d9d88557a715e6191f6be42f3963 /common/alspan.h | |
| parent | 153f133435fe46a94eb4d26c0483f4e6166fb896 (diff) | |
Avoid potentially ambiguous span copy constructor
Diffstat (limited to 'common/alspan.h')
| -rw-r--r-- | common/alspan.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/common/alspan.h b/common/alspan.h index bd6b53bb..d02b13f2 100644 --- a/common/alspan.h +++ b/common/alspan.h @@ -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; |