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initial impl of P1976R2

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This commit is contained in:
Jordan Maples
2020-05-19 16:27:46 -07:00
parent 1999b48a51
commit 2085c7acde
6 changed files with 1267 additions and 1241 deletions
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tests/span_compatibility_tests.cpp
+8 -6
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@@ -846,8 +846,6 @@ static_assert(!std::is_constructible<gsl::span<int, 3>, std::array<int, 500>&>::
"!std::is_constructible<gsl::span<int, 3>, std::array<int, 500>&>");
static_assert(!std::is_constructible<gsl::span<int, 3>, const std::array<int, 3>&>::value,
"!std::is_constructible<gsl::span<int, 3>, const std::array<int, 3>&>");
static_assert(!std::is_constructible<gsl::span<int, 3>, const gsl::span<int>&>::value,
"!std::is_constructible<gsl::span<int, 3>, const gsl::span<int>&>");
static_assert(!std::is_constructible<gsl::span<int, 3>, const gsl::span<int, 500>&>::value,
"!std::is_constructible<gsl::span<int, 3>, const gsl::span<int, 500>&>");
static_assert(!std::is_constructible<gsl::span<int, 3>, const gsl::span<const int>&>::value,
@@ -866,12 +864,8 @@ static_assert(!std::is_constructible<gsl::span<const int>, std::array<double, 3>
static_assert(!std::is_constructible<gsl::span<const int>, const gsl::span<double, 3>&>::value,
"!std::is_constructible<gsl::span<const int>, const gsl::span<double, 3>&>");
static_assert(!std::is_constructible<gsl::span<const int, 3>, const gsl::span<int>&>::value,
"!std::is_constructible<gsl::span<const int, 3>, const gsl::span<int>&>");
static_assert(!std::is_constructible<gsl::span<const int, 3>, const gsl::span<int, 500>&>::value,
"!std::is_constructible<gsl::span<const int, 3>, const gsl::span<int, 500>&>");
static_assert(!std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int>&>::value,
"!std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int>&>");
static_assert(
!std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int, 500>&>::value,
"!std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int, 500>&>");
@@ -925,6 +919,14 @@ static_assert(!std::is_constructible<gsl::span<const Derived>, std::array<Base,
static_assert(!std::is_constructible<gsl::span<const Derived>, const std::array<Base, 3>&>::value,
"!std::is_constructible<gsl::span<const Derived>, const std::array<Base, 3>&>");
// Explicit construction enabled in P1976R2
static_assert(std::is_constructible<gsl::span<int, 3>, const gsl::span<int>&>::value,
"std::is_constructible<gsl::span<int, 3>, const gsl::span<int>&>");
static_assert(std::is_constructible<gsl::span<const int, 3>, const gsl::span<int>&>::value,
"std::is_constructible<gsl::span<const int, 3>, const gsl::span<int>&>");
static_assert(std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int>&>::value,
"std::is_constructible<gsl::span<const int, 3>, const gsl::span<const int>&>");
// no throw copy constructor
static_assert(std::is_nothrow_copy_constructible<gsl::span<int>>::value,
"std::is_nothrow_copy_constructible<gsl::span<int>>");