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Fix std::span 2020 compilation errors + test failures

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This commit is contained in:
Dmitry Kobets 2021-11-24 16:41:47 -08:00
parent e0880931ae
commit f2feab563f
7 changed files with 39 additions and 36 deletions
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8
include/gsl/util
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@ -124,7 +124,7 @@ template <class Cont>
GSL_SUPPRESS(bounds.4) // NO-FORMAT: attribute
GSL_SUPPRESS(bounds.2) // NO-FORMAT: attribute
// clang-format on
constexpr auto at(Cont& cont, const index i) -> decltype(cont[cont.size()])
constexpr decltype(auto) at(Cont& cont, const index i)
{
Expects(i >= 0 && i < narrow_cast<index>(cont.size()));
using size_type = decltype(cont.size());
@ -143,10 +143,10 @@ GSL_SUPPRESS(bounds.1) // NO-FORMAT: attribute
#if defined(__cpp_lib_span) && __cpp_lib_span >= 202002L
template <class T, size_t extent = std::dynamic_extent>
constexpr auto at(std::span<T, extent> sp, const index i)
constexpr decltype(auto) at(std::span<T, extent> sp, const index i)
{
Expects(i >= 0 && i < narrow_cast<i>(sp.size()));
return sp[i];
Expects(i >= 0 && i < narrow_cast<index>(sp.size()));
return sp[gsl::narrow_cast<size_t>(i)];
}
#endif // __cpp_lib_span >= 202002L
} // namespace gsl

5
tests/algorithm_tests.cpp
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@ -27,7 +27,6 @@ namespace gsl
struct fail_fast;
} // namespace gsl
using namespace std;
using namespace gsl;
TEST(algorithm_tests, same_type)
@ -73,8 +72,8 @@ TEST(algorithm_tests, same_type)
std::array<int, 5> src{1, 2, 3, 4, 5};
std::array<int, 10> dst{};
const span<int> src_span(src);
const span<int, 10> dst_span(dst);
const gsl::span<int> src_span(src);
const gsl::span<int, 10> dst_span(dst);
copy(src_span, dst_span);
copy(src_span, dst_span.subspan(src_span.size()));

16
tests/at_tests.cpp
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@ -128,16 +128,22 @@ TEST(at_tests, std_span)
std::vector<int> cvec{1, 2, 3, 4, 5};
std::span csp{cvec};
for (size_t i = 0, i < vec.size(); ++i)
for (gsl::index i = 0; i < gsl::narrow_cast<gsl::index>(vec.size()); ++i)
{
EXPECT_TRUE(&gsl::at(sp, i) == &vec[i]);
EXPECT_TRUE(&gsl::at(csp, i) == &cvec[i]);
EXPECT_TRUE(&gsl::at(sp, i) == &vec[gsl::narrow_cast<size_t>(i)]);
EXPECT_TRUE(&gsl::at(csp, i) == &cvec[gsl::narrow_cast<size_t>(i)]);
}
const auto terminateHandler = std::set_terminate([] {
std::cerr << "Expected Death. std_span";
std::abort();
});
const auto expected = GetExpectedDeathString(terminateHandler);
EXPECT_DEATH(gsl::at(sp, -1), expected);
EXPECT_DEATH(gsl::at(sp, sp.size()), expected);
EXPECT_DEATH(gsl::at(sp, gsl::narrow_cast<gsl::index>(sp.size())), expected);
EXPECT_DEATH(gsl::at(csp, -1), expected);
EXPECT_DEATH(gsl::at(csp, sp.size()), expected);
EXPECT_DEATH(gsl::at(csp, gsl::narrow_cast<gsl::index>(sp.size())), expected);
}
#endif // __cplusplus >= 202002L

6
tests/span_compatibility_tests.cpp
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@ -55,14 +55,14 @@ void ArrayConvertibilityCheck()
EXPECT_TRUE(sp_const_nullptr_1.data() == stl_nullptr.data());
EXPECT_TRUE(sp_const_nullptr_1.size() == 3);
span<const T* const> sp_const_nullptr_2{std::as_const(stl_nullptr)};
gsl::span<const T* const> sp_const_nullptr_2{std::as_const(stl_nullptr)};
EXPECT_TRUE(sp_const_nullptr_2.data() == stl_nullptr.data());
EXPECT_TRUE(sp_const_nullptr_2.size() == 3);
static_assert(std::is_same<decltype(span{stl_nullptr}), span<T*, 3>>::value,
static_assert(std::is_same<decltype(gsl::span{stl_nullptr}), gsl::span<T*, 3>>::value,
"std::is_same< decltype(span{stl_nullptr}), span<T*, 3>>::value");
static_assert(
std::is_same<decltype(span{std::as_const(stl_nullptr)}), span<T* const, 3>>::value,
std::is_same<decltype(gsl::span{std::as_const(stl_nullptr)}), gsl::span<T* const, 3>>::value,
"std::is_same< decltype(span{std::as_const(stl_nullptr)}), span<T* const, "
"3>>::value");
}

36
tests/span_ext_tests.cpp
View File

@ -48,7 +48,7 @@ TEST(span_ext_test, make_span_from_pointer_length_constructor)
{
int* p = nullptr;
auto s = make_span(p, narrow_cast<span<int>::size_type>(0));
auto s = make_span(p, narrow_cast<gsl::span<int>::size_type>(0));
EXPECT_TRUE(s.size() == 0);
EXPECT_TRUE(s.data() == nullptr);
}
@ -136,9 +136,9 @@ TEST(span_ext_test, make_span_from_std_array_constructor)
// This test checks for the bug found in gcc 6.1, 6.2, 6.3, 6.4, 6.5 7.1, 7.2, 7.3 - issue #590
{
span<int> s1 = make_span(arr);
gsl::span<int> s1 = make_span(arr);
static span<int> s2;
static gsl::span<int> s2;
s2 = s1;
#if defined(__GNUC__) && __GNUC__ == 6 && (__GNUC_MINOR__ == 4 || __GNUC_MINOR__ == 5) && \
@ -194,7 +194,7 @@ TEST(span_ext_test, make_span_from_container_constructor)
TEST(span_test, interop_with_gsl_at)
{
int arr[5] = {1, 2, 3, 4, 5};
span<int> s{arr};
gsl::span<int> s{arr};
EXPECT_TRUE(at(s, 0) == 1);
EXPECT_TRUE(at(s, 1) == 2);
}
@ -202,7 +202,7 @@ TEST(span_test, interop_with_gsl_at)
TEST(span_ext_test, iterator_free_functions)
{
int a[] = {1, 2, 3, 4};
span<int> s{a};
gsl::span<int> s{a};
EXPECT_TRUE((std::is_same<decltype(s.begin()), decltype(begin(s))>::value));
EXPECT_TRUE((std::is_same<decltype(s.end()), decltype(end(s))>::value));
@ -232,7 +232,7 @@ TEST(span_ext_test, iterator_free_functions)
TEST(span_ext_test, ssize_free_function)
{
int a[] = {1, 2, 3, 4};
span<int> s{a};
gsl::span<int> s{a};
EXPECT_FALSE((std::is_same<decltype(s.size()), decltype(ssize(s))>::value));
EXPECT_TRUE(s.size() == static_cast<std::size_t>(ssize(s)));
@ -242,8 +242,8 @@ TEST(span_ext_test, ssize_free_function)
TEST(span_ext_test, comparison_operators)
{
{
span<int> s1;
span<int> s2;
gsl::span<int> s1;
gsl::span<int> s2;
EXPECT_TRUE(s1 == s2);
EXPECT_FALSE(s1 != s2);
EXPECT_FALSE(s1 < s2);
@ -260,8 +260,8 @@ TEST(span_ext_test, comparison_operators)
{
int arr[] = {2, 1};
span<int> s1 = arr;
span<int> s2 = arr;
gsl::span<int> s1 = arr;
gsl::span<int> s2 = arr;
EXPECT_TRUE(s1 == s2);
EXPECT_FALSE(s1 != s2);
@ -280,8 +280,8 @@ TEST(span_ext_test, comparison_operators)
{
int arr[] = {2, 1}; // bigger
span<int> s1;
span<int> s2 = arr;
gsl::span<int> s1;
gsl::span<int> s2 = arr;
EXPECT_TRUE(s1 != s2);
EXPECT_TRUE(s2 != s1);
@ -300,8 +300,8 @@ TEST(span_ext_test, comparison_operators)
{
int arr1[] = {1, 2};
int arr2[] = {1, 2};
span<int> s1 = arr1;
span<int> s2 = arr2;
gsl::span<int> s1 = arr1;
gsl::span<int> s2 = arr2;
EXPECT_TRUE(s1 == s2);
EXPECT_FALSE(s1 != s2);
@ -320,8 +320,8 @@ TEST(span_ext_test, comparison_operators)
{
int arr[] = {1, 2, 3};
span<int> s1 = {&arr[0], 2}; // shorter
span<int> s2 = arr; // longer
gsl::span<int> s1 = {&arr[0], 2}; // shorter
gsl::span<int> s2 = arr; // longer
EXPECT_TRUE(s1 != s2);
EXPECT_TRUE(s2 != s1);
@ -341,8 +341,8 @@ TEST(span_ext_test, comparison_operators)
int arr1[] = {1, 2}; // smaller
int arr2[] = {2, 1}; // bigger
span<int> s1 = arr1;
span<int> s2 = arr2;
gsl::span<int> s1 = arr1;
gsl::span<int> s2 = arr2;
EXPECT_TRUE(s1 != s2);
EXPECT_TRUE(s2 != s1);

3
tests/span_tests.cpp
View File

@ -43,7 +43,6 @@
#include "deathTestCommon.h"
using namespace std;
using namespace gsl;
namespace
@ -1085,7 +1084,7 @@ TEST(span_test, as_bytes)
int b[5] = {1, 2, 3, 4, 5};
{
span<int> sp(begin(b), static_cast<size_t>(-2));
span<int> sp(std::begin(b), static_cast<size_t>(-2));
EXPECT_DEATH((void) sp.size_bytes(), expected);
}
}

1
tests/string_span_tests.cpp
View File

@ -30,7 +30,6 @@
#include "deathTestCommon.h"
using namespace std;
using namespace gsl;
// Generic string functions