| // Copyright (C) 2018-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| // |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do compile { target c++2a } } |
| |
| #include <type_traits> |
| #include <testsuite_tr1.h> |
| |
| #ifndef IS_NT_CONVERTIBLE_DEFINED |
| using std::is_nothrow_convertible; |
| #endif |
| |
| void test01() |
| { |
| using namespace __gnu_test; |
| |
| // Positive conversion tests. |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, const int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| volatile int, const int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, float>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| double, float>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float, int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int*, const int*>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int*, void*>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int[4], int*>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float&, int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, const int&>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const int&, int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float, const int&>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(int), int(*)(int)>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(&)(int), int(*)(int)>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| EnumType, int>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ClassType, ClassType>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| DerivedType, ClassType>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| DerivedType*, ClassType*>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| DerivedType&, ClassType&>(true)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| const int, const int&>(true)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| void, void>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const void, void>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| void, volatile void>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| double&, NoexceptExplicitClass>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| NoexceptCopyConsClass, |
| NoexceptCopyConsClass>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const NoexceptCopyConsClass, |
| NoexceptCopyConsClass>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const NoexceptCopyConsClass&, |
| NoexceptCopyConsClass>(true)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| NoexceptMoveConsClass, |
| NoexceptMoveConsClass>(true)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(int), int(&)(int)>(true)); |
| |
| // Negative conversion tests. |
| static_assert(test_relationship<is_nothrow_convertible, |
| const int*, int*>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int*, float*>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const int[4], int*>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int[4], int[4]>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const int&, int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float&, int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float, volatile int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(int), int(int)>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(int), int(*)(void)>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int(*)(int), int(&)(int)>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, EnumType>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, ClassType>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ClassType, DerivedType>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ClassType*, DerivedType*>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ClassType&, DerivedType&>(false)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| void, int>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| void, float>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| void, int(*)(int)>(false)); |
| |
| // C++0x |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, void>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int[4], void>(false)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| int, int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| float, volatile float&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const volatile int, |
| const volatile int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| volatile int, volatile int&>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| double&, ExplicitClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| int&, ExplicitClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| void*, ExplicitClass>(false)); |
| |
| static_assert(test_relationship<is_nothrow_convertible, |
| ExceptCopyConsClass, |
| ExceptCopyConsClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const ExceptCopyConsClass, |
| ExceptCopyConsClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| const ExceptCopyConsClass&, |
| ExceptCopyConsClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ExceptMoveConsClass, |
| ExceptMoveConsClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| ExceptMoveConsClass&, |
| ExceptMoveConsClass>(false)); |
| static_assert(test_relationship<is_nothrow_convertible, |
| NoexceptMoveConsClass&, |
| NoexceptMoveConsClass>(false)); |
| } |
| |
| void test02() |
| { |
| struct X { }; |
| |
| struct Y |
| { |
| explicit Y(X) noexcept; // not viable for implicit conversions |
| Y(...); |
| }; |
| |
| static_assert(!is_nothrow_convertible<X, Y>::value, ""); |
| } |