libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_destructible.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_trivially_destructible
  12
  13 #include <type_traits>
  14 #include "test_macros.h"
  15
  16 template <class T>
  17 void test_is_trivially_destructible()
  18 {
  19     static_assert( std::is_trivially_destructible<T>::value, "");
  20     static_assert( std::is_trivially_destructible<const T>::value, "");
  21     static_assert( std::is_trivially_destructible<volatile T>::value, "");
  22     static_assert( std::is_trivially_destructible<const volatile T>::value, "");
  23 #if TEST_STD_VER > 14
  24     static_assert( std::is_trivially_destructible_v<T>, "");
  25     static_assert( std::is_trivially_destructible_v<const T>, "");
  26     static_assert( std::is_trivially_destructible_v<volatile T>, "");
  27     static_assert( std::is_trivially_destructible_v<const volatile T>, "");
  28 #endif
  29 }
  30
  31 template <class T>
  32 void test_is_not_trivially_destructible()
  33 {
  34     static_assert(!std::is_trivially_destructible<T>::value, "");
  35     static_assert(!std::is_trivially_destructible<const T>::value, "");
  36     static_assert(!std::is_trivially_destructible<volatile T>::value, "");
  37     static_assert(!std::is_trivially_destructible<const volatile T>::value, "");
  38 #if TEST_STD_VER > 14
  39     static_assert(!std::is_trivially_destructible_v<T>, "");
  40     static_assert(!std::is_trivially_destructible_v<const T>, "");
  41     static_assert(!std::is_trivially_destructible_v<volatile T>, "");
  42     static_assert(!std::is_trivially_destructible_v<const volatile T>, "");
  43 #endif
  44 }
  45
  46 struct PublicDestructor           { public:     ~PublicDestructor() {}};
  47 struct ProtectedDestructor        { protected:  ~ProtectedDestructor() {}};
  48 struct PrivateDestructor          { private:    ~PrivateDestructor() {}};
  49
  50 struct VirtualPublicDestructor           { public:    virtual ~VirtualPublicDestructor() {}};
  51 struct VirtualProtectedDestructor        { protected: virtual ~VirtualProtectedDestructor() {}};
  52 struct VirtualPrivateDestructor          { private:   virtual ~VirtualPrivateDestructor() {}};
  53
  54 struct PurePublicDestructor              { public:    virtual ~PurePublicDestructor() = 0; };
  55 struct PureProtectedDestructor           { protected: virtual ~PureProtectedDestructor() = 0; };
  56 struct PurePrivateDestructor             { private:   virtual ~PurePrivateDestructor() = 0; };
  57
  58
  59 class Empty
  60 {
  61 };
  62
  63 union Union {};
  64
  65 struct bit_zero
  66 {
  67     int :  0;
  68 };
  69
  70 class Abstract
  71 {
  72     virtual void foo() = 0;
  73 };
  74
  75 class AbstractDestructor
  76 {
  77     virtual ~AbstractDestructor() = 0;
  78 };
  79
  80 struct A
  81 {
  82     ~A();
  83 };
  84
  85 int main(int, char**)
  86 {
  87     test_is_not_trivially_destructible<void>();
  88     test_is_not_trivially_destructible<A>();
  89     test_is_not_trivially_destructible<char[]>();
  90     test_is_not_trivially_destructible<VirtualPublicDestructor>();
  91     test_is_not_trivially_destructible<PurePublicDestructor>();
  92
  93     test_is_trivially_destructible<Abstract>();
  94     test_is_trivially_destructible<Union>();
  95     test_is_trivially_destructible<Empty>();
  96     test_is_trivially_destructible<int&>();
  97     test_is_trivially_destructible<int>();
  98     test_is_trivially_destructible<double>();
  99     test_is_trivially_destructible<int*>();
 100     test_is_trivially_destructible<const int*>();
 101     test_is_trivially_destructible<char[3]>();
 102     test_is_trivially_destructible<bit_zero>();
 103
 104 #if TEST_STD_VER >= 11
 105     // requires access control sfinae
 106     test_is_not_trivially_destructible<ProtectedDestructor>();
 107     test_is_not_trivially_destructible<PrivateDestructor>();
 108     test_is_not_trivially_destructible<VirtualProtectedDestructor>();
 109     test_is_not_trivially_destructible<VirtualPrivateDestructor>();
 110     test_is_not_trivially_destructible<PureProtectedDestructor>();
 111     test_is_not_trivially_destructible<PurePrivateDestructor>();
 112 #endif
 113
 114 #if TEST_HAS_BUILTIN_IDENTIFIER(_Atomic)
 115     test_is_trivially_destructible<_Atomic int>();
 116     test_is_trivially_destructible<_Atomic float>();
 117     test_is_trivially_destructible<_Atomic int*>();
 118 #endif
 119
 120   return 0;
 121 }