diff options
Diffstat (limited to 'abseil-cpp/absl/types/optional_test.cc')
| -rw-r--r-- | abseil-cpp/absl/types/optional_test.cc | 115 |
1 files changed, 57 insertions, 58 deletions
diff --git a/abseil-cpp/absl/types/optional_test.cc b/abseil-cpp/absl/types/optional_test.cc index 7ef142c..5da297b 100644 --- a/abseil-cpp/absl/types/optional_test.cc +++ b/abseil-cpp/absl/types/optional_test.cc @@ -23,10 +23,41 @@ #include "gtest/gtest.h" #include "absl/base/config.h" -#include "absl/base/internal/raw_logging.h" +#include "absl/log/log.h" #include "absl/meta/type_traits.h" #include "absl/strings/string_view.h" +#if defined(__cplusplus) && __cplusplus >= 202002L +// In C++20, volatile-qualified return types are deprecated. +#define ABSL_VOLATILE_RETURN_TYPES_DEPRECATED 1 +#endif + +// The following types help test an internal compiler error in GCC5 though +// GCC10. The case OptionalTest.InternalCompilerErrorInGcc5ToGcc10 crashes the +// compiler without a workaround. This test case should remain at the beginning +// of the file as the internal compiler error is sensitive to other constructs +// in this file. +template <class T, class...> +using GccIceHelper1 = T; +template <typename T> +struct GccIceHelper2 {}; +template <typename T> +class GccIce { + template <typename U, + typename SecondTemplateArgHasToExistForSomeReason = void, + typename DependentType = void, + typename = std::is_assignable<GccIceHelper1<T, DependentType>&, U>> + GccIce& operator=(GccIceHelper2<U> const&) {} +}; + +TEST(OptionalTest, InternalCompilerErrorInGcc5ToGcc10) { + GccIce<int> instantiate_ice_with_same_type_as_optional; + static_cast<void>(instantiate_ice_with_same_type_as_optional); + absl::optional<int> val1; + absl::optional<int> val2; + val1 = val2; +} + struct Hashable {}; namespace std { @@ -66,9 +97,9 @@ struct StructorListener { // 4522: multiple assignment operators specified // We wrote multiple of them to test that the correct overloads are selected. #ifdef _MSC_VER -#pragma warning( push ) -#pragma warning( disable : 4521) -#pragma warning( disable : 4522) +#pragma warning(push) +#pragma warning(disable : 4521) +#pragma warning(disable : 4522) #endif struct Listenable { static StructorListener* listener; @@ -102,20 +133,11 @@ struct Listenable { ~Listenable() { ++listener->destruct; } }; #ifdef _MSC_VER -#pragma warning( pop ) +#pragma warning(pop) #endif StructorListener* Listenable::listener = nullptr; -// ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST is defined to 1 when the standard -// library implementation doesn't marked initializer_list's default constructor -// constexpr. The C++11 standard doesn't specify constexpr on it, but C++14 -// added it. However, libstdc++ 4.7 marked it constexpr. -#if defined(_LIBCPP_VERSION) && \ - (_LIBCPP_STD_VER <= 11 || defined(_LIBCPP_HAS_NO_CXX14_CONSTEXPR)) -#define ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST 1 -#endif - struct ConstexprType { enum CtorTypes { kCtorDefault, @@ -125,10 +147,8 @@ struct ConstexprType { }; constexpr ConstexprType() : x(kCtorDefault) {} constexpr explicit ConstexprType(int i) : x(kCtorInt) {} -#ifndef ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST constexpr ConstexprType(std::initializer_list<int> il) : x(kCtorInitializerList) {} -#endif constexpr ConstexprType(const char*) // NOLINT(runtime/explicit) : x(kCtorConstChar) {} int x; @@ -205,6 +225,7 @@ TEST(optionalTest, CopyConstructor) { EXPECT_TRUE(opt42_copy); EXPECT_EQ(42, *opt42_copy); } +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) { absl::optional<volatile int> empty, opt42 = 42; absl::optional<volatile int> empty_copy(empty); @@ -213,6 +234,7 @@ TEST(optionalTest, CopyConstructor) { EXPECT_TRUE(opt42_copy); EXPECT_EQ(42, *opt42_copy); } +#endif // test copyablility EXPECT_TRUE(std::is_copy_constructible<absl::optional<int>>::value); EXPECT_TRUE(std::is_copy_constructible<absl::optional<Copyable>>::value); @@ -224,18 +246,11 @@ TEST(optionalTest, CopyConstructor) { EXPECT_FALSE( absl::is_trivially_copy_constructible<absl::optional<Copyable>>::value); -#if defined(ABSL_USES_STD_OPTIONAL) && defined(__GLIBCXX__) - // libstdc++ std::optional implementation (as of 7.2) has a bug: when T is - // trivially copyable, optional<T> is not trivially copyable (due to one of - // its base class is unconditionally nontrivial). -#define ABSL_GLIBCXX_OPTIONAL_TRIVIALITY_BUG 1 -#endif -#ifndef ABSL_GLIBCXX_OPTIONAL_TRIVIALITY_BUG EXPECT_TRUE( absl::is_trivially_copy_constructible<absl::optional<int>>::value); EXPECT_TRUE( absl::is_trivially_copy_constructible<absl::optional<const int>>::value); -#ifndef _MSC_VER +#if !defined(_MSC_VER) && !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) // See defect report "Trivial copy/move constructor for class with volatile // member" at // http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#2094 @@ -244,8 +259,7 @@ TEST(optionalTest, CopyConstructor) { // Also a cv-qualified scalar type should be trivially copyable. EXPECT_TRUE(absl::is_trivially_copy_constructible< absl::optional<volatile int>>::value); -#endif // _MSC_VER -#endif // ABSL_GLIBCXX_OPTIONAL_TRIVIALITY_BUG +#endif // !defined(_MSC_VER) && !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) // constexpr copy constructor for trivially copyable types { @@ -275,17 +289,10 @@ TEST(optionalTest, CopyConstructor) { EXPECT_TRUE(absl::is_trivially_copy_constructible< absl::optional<const TrivialCopyable>>::value); #endif - // When testing with VS 2017 15.3, there seems to be a bug in MSVC - // std::optional when T is volatile-qualified. So skipping this test. - // Bug report: - // https://connect.microsoft.com/VisualStudio/feedback/details/3142534 -#if defined(ABSL_USES_STD_OPTIONAL) && defined(_MSC_VER) && _MSC_VER >= 1911 -#define ABSL_MSVC_OPTIONAL_VOLATILE_COPY_BUG 1 -#endif -#ifndef ABSL_MSVC_OPTIONAL_VOLATILE_COPY_BUG +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) EXPECT_FALSE(std::is_copy_constructible< absl::optional<volatile TrivialCopyable>>::value); -#endif +#endif // !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) } } @@ -305,11 +312,9 @@ TEST(optionalTest, MoveConstructor) { EXPECT_FALSE(std::is_move_constructible<absl::optional<NonMovable>>::value); // test noexcept EXPECT_TRUE(std::is_nothrow_move_constructible<absl::optional<int>>::value); -#ifndef ABSL_USES_STD_OPTIONAL EXPECT_EQ( absl::default_allocator_is_nothrow::value, std::is_nothrow_move_constructible<absl::optional<MoveableThrow>>::value); -#endif EXPECT_TRUE(std::is_nothrow_move_constructible< absl::optional<MoveableNoThrow>>::value); } @@ -336,11 +341,9 @@ TEST(optionalTest, InPlaceConstructor) { constexpr absl::optional<ConstexprType> opt1{absl::in_place_t(), 1}; static_assert(opt1, ""); static_assert((*opt1).x == ConstexprType::kCtorInt, ""); -#ifndef ABSL_HAVE_NO_CONSTEXPR_INITIALIZER_LIST constexpr absl::optional<ConstexprType> opt2{absl::in_place_t(), {1, 2}}; static_assert(opt2, ""); static_assert((*opt2).x == ConstexprType::kCtorInitializerList, ""); -#endif EXPECT_FALSE((std::is_constructible<absl::optional<ConvertsFromInPlaceT>, absl::in_place_t>::value)); @@ -638,8 +641,7 @@ TEST(optionalTest, CopyAssignment) { EXPECT_TRUE(absl::is_copy_assignable<NonTrivial>::value); EXPECT_FALSE(absl::is_trivially_copy_assignable<NonTrivial>::value); - // std::optional doesn't support volatile nontrivial types. -#ifndef ABSL_USES_STD_OPTIONAL +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) { StructorListener listener; Listenable::listener = &listener; @@ -658,7 +660,7 @@ TEST(optionalTest, CopyAssignment) { EXPECT_EQ(1, listener.destruct); EXPECT_EQ(1, listener.volatile_copy_assign); } -#endif // ABSL_USES_STD_OPTIONAL +#endif // !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) } TEST(optionalTest, MoveAssignment) { @@ -681,8 +683,7 @@ TEST(optionalTest, MoveAssignment) { EXPECT_EQ(1, listener.destruct); EXPECT_EQ(1, listener.move_assign); } - // std::optional doesn't support volatile nontrivial types. -#ifndef ABSL_USES_STD_OPTIONAL +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) { StructorListener listener; Listenable::listener = &listener; @@ -702,7 +703,7 @@ TEST(optionalTest, MoveAssignment) { EXPECT_EQ(1, listener.destruct); EXPECT_EQ(1, listener.volatile_move_assign); } -#endif // ABSL_USES_STD_OPTIONAL +#endif // !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) EXPECT_FALSE(absl::is_move_assignable<absl::optional<const int>>::value); EXPECT_TRUE(absl::is_move_assignable<absl::optional<Copyable>>::value); EXPECT_TRUE(absl::is_move_assignable<absl::optional<MoveableThrow>>::value); @@ -974,8 +975,8 @@ TEST(optionalTest, PointerStuff) { EXPECT_EQ("foo", *opt); const auto& opt_const = opt; EXPECT_EQ("foo", *opt_const); - EXPECT_EQ(opt->size(), 3); - EXPECT_EQ(opt_const->size(), 3); + EXPECT_EQ(opt->size(), 3u); + EXPECT_EQ(opt_const->size(), 3u); constexpr absl::optional<ConstexprType> opt1(1); static_assert((*opt1).x == ConstexprType::kCtorInt, ""); @@ -986,9 +987,8 @@ TEST(optionalTest, PointerStuff) { // Skip that test to make the build green again when using the old compiler. // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59296 is fixed in 4.9.1. #if defined(__GNUC__) && !defined(__clang__) -#define GCC_VERSION (__GNUC__ * 10000 \ - + __GNUC_MINOR__ * 100 \ - + __GNUC_PATCHLEVEL__) +#define GCC_VERSION \ + (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) #if GCC_VERSION < 40901 #define ABSL_SKIP_OVERLOAD_TEST_DUE_TO_GCC_BUG #endif @@ -996,7 +996,7 @@ TEST(optionalTest, PointerStuff) { // MSVC has a bug with "cv-qualifiers in class construction", fixed in 2017. See // https://docs.microsoft.com/en-us/cpp/cpp-conformance-improvements-2017#bug-fixes -// The compiler some incorrectly ingores the cv-qualifier when generating a +// The compiler some incorrectly ignores the cv-qualifier when generating a // class object via a constructor call. For example: // // class optional { @@ -1038,6 +1038,7 @@ TEST(optionalTest, Value) { #endif EXPECT_EQ("c&&", TypeQuals(OC(absl::in_place, "xvalue_c").value())); +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) // test on volatile type using OV = absl::optional<volatile int>; OV lvalue_v(absl::in_place, 42); @@ -1045,6 +1046,7 @@ TEST(optionalTest, Value) { EXPECT_EQ(42, OV(42).value()); EXPECT_TRUE((std::is_same<volatile int&, decltype(lvalue_v.value())>::value)); EXPECT_TRUE((std::is_same<volatile int&&, decltype(OV(42).value())>::value)); +#endif // !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) // test exception throw on value() absl::optional<int> empty; @@ -1087,6 +1089,7 @@ TEST(optionalTest, DerefOperator) { #endif EXPECT_EQ("c&&", TypeQuals(*OC(absl::in_place, "xvalue_c"))); +#if !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) // test on volatile type using OV = absl::optional<volatile int>; OV lvalue_v(absl::in_place, 42); @@ -1094,6 +1097,7 @@ TEST(optionalTest, DerefOperator) { EXPECT_EQ(42, *OV(42)); EXPECT_TRUE((std::is_same<volatile int&, decltype(*lvalue_v)>::value)); EXPECT_TRUE((std::is_same<volatile int&&, decltype(*OV(42))>::value)); +#endif // !defined(ABSL_VOLATILE_RETURN_TYPES_DEPRECATED) constexpr absl::optional<int> opt1(1); static_assert(*opt1 == 1, ""); @@ -1196,7 +1200,6 @@ void optionalTest_Comparisons_EXPECT_GREATER(T x, U y) { EXPECT_TRUE(x >= y); } - template <typename T, typename U, typename V> void TestComparisons() { absl::optional<T> ae, a2{2}, a4{4}; @@ -1289,7 +1292,6 @@ TEST(optionalTest, Comparisons) { EXPECT_TRUE(e1 == e2); } - TEST(optionalTest, SwapRegression) { StructorListener listener; Listenable::listener = &listener; @@ -1505,7 +1507,7 @@ TEST(optionalTest, Hash) { for (int i = 0; i < 100; ++i) { hashcodes.insert(hash(i)); } - EXPECT_GT(hashcodes.size(), 90); + EXPECT_GT(hashcodes.size(), 90u); static_assert(is_hash_enabled_for<absl::optional<int>>::value, ""); static_assert(is_hash_enabled_for<absl::optional<Hashable>>::value, ""); @@ -1540,8 +1542,7 @@ TEST(optionalTest, Hash) { struct MoveMeNoThrow { MoveMeNoThrow() : x(0) {} [[noreturn]] MoveMeNoThrow(const MoveMeNoThrow& other) : x(other.x) { - ABSL_RAW_LOG(FATAL, "Should not be called."); - abort(); + LOG(FATAL) << "Should not be called."; } MoveMeNoThrow(MoveMeNoThrow&& other) noexcept : x(other.x) {} int x; @@ -1558,12 +1559,10 @@ TEST(optionalTest, NoExcept) { static_assert( std::is_nothrow_move_constructible<absl::optional<MoveMeNoThrow>>::value, ""); -#ifndef ABSL_USES_STD_OPTIONAL static_assert(absl::default_allocator_is_nothrow::value == std::is_nothrow_move_constructible< absl::optional<MoveMeThrow>>::value, ""); -#endif std::vector<absl::optional<MoveMeNoThrow>> v; for (int i = 0; i < 10; ++i) v.emplace_back(); } |