diff options
Diffstat (limited to 'test/std/utilities/meta/meta.rel/is_convertible.pass.cpp')
| -rw-r--r-- | test/std/utilities/meta/meta.rel/is_convertible.pass.cpp | 62 |
1 files changed, 57 insertions, 5 deletions
diff --git a/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp b/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp index 1681c39972d2..552c16075da7 100644 --- a/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp +++ b/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp @@ -12,7 +12,6 @@ // is_convertible #include <type_traits> - #include "test_macros.h" template <class T, class U> @@ -46,12 +45,22 @@ void test_is_not_convertible() } typedef void Function(); +typedef void ConstFunction() const; typedef char Array[1]; +struct StringType { + StringType(const char*) {} +}; + class NonCopyable { NonCopyable(NonCopyable&); }; +template <typename T> +class CannotInstantiate { + enum { X = T::ThisExpressionWillBlowUp }; +}; + int main() { // void @@ -64,12 +73,19 @@ int main() test_is_not_convertible<void,char> (); test_is_not_convertible<void,char&> (); test_is_not_convertible<void,char*> (); + test_is_not_convertible<char, void>(); // Function test_is_not_convertible<Function, void> (); test_is_not_convertible<Function, Function> (); test_is_convertible<Function, Function&> (); test_is_convertible<Function, Function*> (); + test_is_convertible<Function, Function*const> (); + +#if TEST_STD_VER >= 11 + static_assert(( std::is_convertible<Function, Function&&>::value), ""); +#endif + test_is_not_convertible<Function, Array> (); test_is_not_convertible<Function, Array&> (); test_is_not_convertible<Function, char> (); @@ -100,6 +116,16 @@ int main() test_is_not_convertible<Function*, char&> (); test_is_not_convertible<Function*, char*> (); + // Non-referencable function type + static_assert((!std::is_convertible<ConstFunction, Function>::value), ""); + static_assert((!std::is_convertible<ConstFunction, Function*>::value), ""); + static_assert((!std::is_convertible<ConstFunction, Function&>::value), ""); + static_assert((!std::is_convertible<ConstFunction, Function>::value), ""); + static_assert((!std::is_convertible<Function*, ConstFunction>::value), ""); + static_assert((!std::is_convertible<Function&, ConstFunction>::value), ""); + static_assert((!std::is_convertible<ConstFunction, ConstFunction>::value), ""); + static_assert((!std::is_convertible<ConstFunction, void>::value), ""); + // Array test_is_not_convertible<Array, void> (); test_is_not_convertible<Array, Function> (); @@ -109,17 +135,37 @@ int main() static_assert((!std::is_convertible<Array, Array&>::value), ""); static_assert(( std::is_convertible<Array, const Array&>::value), ""); + static_assert((!std::is_convertible<Array, const volatile Array&>::value), ""); + static_assert((!std::is_convertible<const Array, Array&>::value), ""); static_assert(( std::is_convertible<const Array, const Array&>::value), ""); + static_assert((!std::is_convertible<Array, volatile Array&>::value), ""); + static_assert((!std::is_convertible<Array, const volatile Array&>::value), ""); + +#if TEST_STD_VER >= 11 + static_assert(( std::is_convertible<Array, Array&&>::value), ""); + static_assert(( std::is_convertible<Array, const Array&&>::value), ""); + static_assert(( std::is_convertible<Array, volatile Array&&>::value), ""); + static_assert(( std::is_convertible<Array, const volatile Array&&>::value), ""); + static_assert(( std::is_convertible<const Array, const Array&&>::value), ""); + static_assert((!std::is_convertible<Array&, Array&&>::value), ""); + static_assert((!std::is_convertible<Array&&, Array&>::value), ""); +#endif test_is_not_convertible<Array, char> (); test_is_not_convertible<Array, char&> (); static_assert(( std::is_convertible<Array, char*>::value), ""); static_assert(( std::is_convertible<Array, const char*>::value), ""); + static_assert(( std::is_convertible<Array, char* const>::value), ""); + static_assert(( std::is_convertible<Array, char* const volatile>::value), ""); + static_assert((!std::is_convertible<const Array, char*>::value), ""); static_assert(( std::is_convertible<const Array, const char*>::value), ""); + static_assert((!std::is_convertible<char[42][42], char*>::value), ""); + static_assert((!std::is_convertible<char[][1], char*>::value), ""); + // Array& test_is_not_convertible<Array&, void> (); test_is_not_convertible<Array&, Function> (); @@ -140,6 +186,9 @@ int main() static_assert((!std::is_convertible<const Array&, char*>::value), ""); static_assert(( std::is_convertible<const Array&, const char*>::value), ""); + static_assert((std::is_convertible<Array, StringType>::value), ""); + static_assert((std::is_convertible<char(&)[], StringType>::value), ""); + // char test_is_not_convertible<char, void> (); test_is_not_convertible<char, Function> (); @@ -149,7 +198,7 @@ int main() test_is_not_convertible<char, Array&> (); test_is_convertible<char, char> (); - + static_assert((!std::is_convertible<char, char&>::value), ""); static_assert(( std::is_convertible<char, const char&>::value), ""); static_assert((!std::is_convertible<const char, char&>::value), ""); @@ -166,7 +215,7 @@ int main() test_is_not_convertible<char&, Array&> (); test_is_convertible<char&, char> (); - + static_assert(( std::is_convertible<char&, char&>::value), ""); static_assert(( std::is_convertible<char&, const char&>::value), ""); static_assert((!std::is_convertible<const char&, char&>::value), ""); @@ -184,7 +233,7 @@ int main() test_is_not_convertible<char*, char> (); test_is_not_convertible<char*, char&> (); - + static_assert(( std::is_convertible<char*, char*>::value), ""); static_assert(( std::is_convertible<char*, const char*>::value), ""); static_assert((!std::is_convertible<const char*, char*>::value), ""); @@ -202,8 +251,11 @@ int main() static_assert((!std::is_convertible<const NonCopyable&, NonCopyable&>::value), ""); // This test requires Access control SFINAE which we only have in C++11 or when // we are using the compiler builtin for is_convertible. -#if __cplusplus >= 201103L || !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) +#if TEST_STD_VER >= 11 || !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) test_is_not_convertible<NonCopyable&, NonCopyable>(); #endif + // Ensure that CannotInstantiate is not instantiated by is_convertible when it is not needed. + // For example CannotInstantiate is instatiated as a part of ADL lookup for arguments of type CannotInstantiate*. + static_assert((std::is_convertible<CannotInstantiate<int>*, CannotInstantiate<int>*>::value), ""); } |