libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_assignable.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // type_traits
  10
  11 // is_nothrow_copy_assignable
  12
  13 #include <type_traits>
  14 #include "test_macros.h"
  15
  16 #include "common.h"
  17
  18 template <class T>
  19 void test_has_nothrow_assign()
  20 {
  21     static_assert( std::is_nothrow_copy_assignable<T>::value, "");
  22 #if TEST_STD_VER > 14
  23     static_assert( std::is_nothrow_copy_assignable_v<T>, "");
  24 #endif
  25 }
  26
  27 template <class T>
  28 void test_has_not_nothrow_assign()
  29 {
  30     static_assert(!std::is_nothrow_copy_assignable<T>::value, "");
  31 #if TEST_STD_VER > 14
  32     static_assert(!std::is_nothrow_copy_assignable_v<T>, "");
  33 #endif
  34 }
  35
  36 int main(int, char**)
  37 {
  38     test_has_nothrow_assign<int&>();
  39     test_has_nothrow_assign<Union>();
  40     test_has_nothrow_assign<Empty>();
  41     test_has_nothrow_assign<int>();
  42     test_has_nothrow_assign<double>();
  43     test_has_nothrow_assign<int*>();
  44     test_has_nothrow_assign<const int*>();
  45     test_has_nothrow_assign<NotEmpty>();
  46     test_has_nothrow_assign<bit_zero>();
  47
  48 // TODO: enable the test for GCC once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is resolved
  49 #if TEST_STD_VER >= 11 && !defined(TEST_COMPILER_GCC)
  50     test_has_not_nothrow_assign<TrivialNotNoexcept>();
  51 #endif
  52     test_has_not_nothrow_assign<const int>();
  53     test_has_not_nothrow_assign<void>();
  54     test_has_not_nothrow_assign<A>();
  55
  56
  57   return 0;
  58 }