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1 // Copyright (C) 2020 Free Software Foundation, Inc.
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2 // This file is part of the GNU ISO C++ Library. This library is free
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3 // software; you can redistribute it and/or modify it under the
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4 // terms of the GNU General Public License as published by the
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5 // Free Software Foundation; either version 3, or (at your option)
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6 // any later version.
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7
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8 // This library is distributed in the hope that it will be useful,
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9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 // GNU General Public License for more details.
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12
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13 // You should have received a copy of the GNU General Public License along
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14 // with this library; see the file COPYING3. If not see
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15 // <http://www.gnu.org/licenses/>.
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16
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17 // { dg-options "-std=gnu++2a" }
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18 // { dg-do run { target c++2a } }
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19
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20 #include <algorithm>
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21 #include <cstring>
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22 #include <deque>
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23 #include <list>
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24 #include <memory>
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25 #include <span>
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26 #include <string>
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27 #include <vector>
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28
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29 #include <testsuite_hooks.h>
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30 #include <testsuite_iterators.h>
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31
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32 using __gnu_test::test_forward_range;
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33
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34 namespace ranges = std::ranges;
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35
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36 template<typename T>
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37 void
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38 test01(const T& value)
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39 {
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40 static_assert(std::equality_comparable<T>);
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41
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42 for (int k = 0; k < 6; k++)
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43 {
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44 constexpr int size = 1024;
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45 auto buffer = std::unique_ptr<char[]>(new char[sizeof(T)*size]);
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46 std::span<T> rx((T *)buffer.get(), size);
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47
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48 auto i = rx.begin();
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49 if (k == 0)
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50 i = ranges::uninitialized_fill(rx.begin(), rx.end(), value);
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51 else if (k == 1)
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52 i = ranges::uninitialized_fill(rx, value);
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53 else if (k == 2)
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54 i = ranges::uninitialized_fill_n(rx.begin(), 1024, value);
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55 else if (k == 3)
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56 i = ranges::uninitialized_fill(rx.begin(), rx.end(), value);
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57 else if (k == 4)
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58 i = ranges::uninitialized_fill(std::as_const(rx), value);
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59 else if (k == 5)
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60 i = ranges::uninitialized_fill_n(rx.begin(), 1024, value);
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61 else
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62 __builtin_abort();
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63
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64 VERIFY( i == rx.end() );
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65 VERIFY( ranges::find_if(rx, [&value](const T& v) { return value != v; }) == i );
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66
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67 ranges::destroy(rx);
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68 }
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69 }
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70
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71 struct X
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72 {
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73 static constexpr int limit = 67;
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74 static inline int construct_count = 0;
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75 static inline int destruct_count = 0;
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76
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77 struct exception {};
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78
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79 bool live = false;
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80
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81 X(int)
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82 {
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83 if (construct_count >= limit)
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84 throw exception{};
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85 construct_count++;
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86 live = true;
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87 }
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88
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89 ~X()
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90 {
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91 VERIFY( live );
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92 live = false;
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93 destruct_count++;
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94 }
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95 };
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96
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97 template<bool test_sized>
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98 void
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99 test02()
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100 {
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101 constexpr int size = 100;
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102 auto buffer = std::unique_ptr<char[]>(new char[sizeof(X)*size]);
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103 test_forward_range<X> rx((X *)buffer.get(), (X *)buffer.get() + size);
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104 int value = 5;
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105 try
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106 {
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107 X::construct_count = 0;
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108 X::destruct_count = 0;
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109 if constexpr (test_sized)
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110 ranges::uninitialized_fill_n(rx.begin(), size, value);
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111 else
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112 ranges::uninitialized_fill(rx, value);
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113 VERIFY( false && "exception not thrown" );
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114 }
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115 catch (const X::exception&)
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116 {
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117 VERIFY( X::construct_count == X::limit );
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118 VERIFY( X::destruct_count == X::limit );
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119 }
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120 }
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121
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122 int
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123 main()
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124 {
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125 test01<char>(5);
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126 test01<int>(3);
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127 test01<long long>(17);
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128 test01<float>(2.18);
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129 test01<double>(3.98);
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130 test01<std::vector<char>>({'a', 'b', 'c', 'd'});
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131 test01<std::string>("hello");
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132 test01<std::deque<double>>({1.1,2.1,3.1});
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133 test01<std::list<std::vector<std::deque<double>>>>({{{3.4},{1}},{{7.9}}});
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134
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135 test02<false>();
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136 test02<true>();
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137 }
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