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Make gsl::span's iterators use the contiguous_iterator concept (#1035)

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Resolves #1016

Co-authored-by: Casey Carter <Casey@Carter.net>
This commit is contained in:
dmitrykobets-msft
2022-03-22 13:20:54 -07:00
committed by GitHub
parent f22f524aa2
commit 383723676c
2 changed files with 45 additions and 1 deletions
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tests/span_tests.cpp
+20
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@@ -40,6 +40,9 @@
#endif // __has_include(<string_view>)
#endif // __has_include
#endif // (defined(__cpp_deduction_guides) && (__cpp_deduction_guides >= 201611L))
#if defined(__cplusplus) && __cplusplus >= 202002L
#include <span>
#endif // __cplusplus >= 202002L
#include "deathTestCommon.h"
@@ -1297,3 +1300,20 @@ TEST(span_test, front_back)
EXPECT_DEATH(s2.front(), expected);
EXPECT_DEATH(s2.back(), expected);
}
#if defined(FORCE_STD_SPAN_TESTS) || defined(__cpp_lib_span) && __cpp_lib_span >= 202002L
TEST(span_test, std_span)
{
// make sure std::span can be constructed from gsl::span
int arr[5] = {1, 2, 3, 4, 5};
gsl::span<int> gsl_span{arr};
#if defined(__cpp_lib_ranges) || (defined(_MSVC_STL_VERSION) && defined(__cpp_lib_concepts))
EXPECT_TRUE(std::to_address(gsl_span.begin()) == gsl_span.data());
EXPECT_TRUE(std::to_address(gsl_span.end()) == gsl_span.data() + gsl_span.size());
#endif // __cpp_lib_ranges
std::span<int> std_span = gsl_span;
EXPECT_TRUE(std_span.data() == gsl_span.data());
EXPECT_TRUE(std_span.size() == gsl_span.size());
}
#endif // defined(FORCE_STD_SPAN_TESTS) || defined(__cpp_lib_span) && __cpp_lib_span >= 202002L