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Can't test for noexcept on C++03; std::hash<nullptr_t> isn't available until C++17

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@298580 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2017-03-23 06:20:18 +00:00
parent af552ba05a
commit 570f32c8dd
3 changed files with 9 additions and 0 deletions
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1
include/functional
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@@ -470,6 +470,7 @@ template <> struct hash<double>;
template <> struct hash<long double>; template <> struct hash<long double>;
template<class T> struct hash<T*>; template<class T> struct hash<T*>;
template <> struct hash<nullptr_t>; // C++17
} // std } // std

3
test/std/utilities/function.objects/unord.hash/pointer.pass.cpp
View File

@@ -41,13 +41,16 @@ test()
assert(h(&i) != h(&j)); assert(h(&i) != h(&j));
} }
// can't hash nullptr_t until c++17
void test_nullptr() void test_nullptr()
{ {
#if TEST_STD_VER > 14
typedef std::nullptr_t T; typedef std::nullptr_t T;
typedef std::hash<T> H; typedef std::hash<T> H;
static_assert((std::is_same<typename H::argument_type, T>::value), "" ); static_assert((std::is_same<typename H::argument_type, T>::value), "" );
static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
ASSERT_NOEXCEPT(H()(T())); ASSERT_NOEXCEPT(H()(T()));
#endif
} }
int main() int main()

5
test/support/test_macros.h
View File

@@ -150,11 +150,16 @@
#define TEST_NORETURN [[noreturn]] #define TEST_NORETURN [[noreturn]]
#endif #endif
#if TEST_STD_VER < 11
#define ASSERT_NOEXCEPT(...)
#define ASSERT_NOT_NOEXCEPT(...)
#else
#define ASSERT_NOEXCEPT(...) \ #define ASSERT_NOEXCEPT(...) \
static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept") static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept")
#define ASSERT_NOT_NOEXCEPT(...) \ #define ASSERT_NOT_NOEXCEPT(...) \
static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept") static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept")
#endif
/* Macros for testing libc++ specific behavior and extensions */ /* Macros for testing libc++ specific behavior and extensions */
#if defined(_LIBCPP_VERSION) #if defined(_LIBCPP_VERSION)