libstdc++-v3/testsuite/libstdc++-prettyprinters/cxx17.cc

   1 // { dg-options "-g -O0" }
   2 // { dg-do run { target c++17 } }
   3
   4 // Copyright (C) 2014-2023 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <filesystem>
  22 #include <any>
  23 #include <optional>
  24 #include <variant>
  25 #include <string_view>
  26 #include <string>
  27 #include <map>
  28 #include <unordered_set>
  29 #include <memory>
  30 #include <iostream>
  31
  32 using std::any;
  33 using std::optional;
  34 using std::variant;
  35 using std::string_view;
  36 using std::map;
  37 using std::unordered_set;
  38 using std::shared_ptr;
  39 using std::weak_ptr;
  40
  41 struct X {
  42   X(int) { }
  43   X(const X&) { } // not trivially-copyable
  44 };
  45
  46 int
  47 main()
  48 {
  49   string_view str = "string";
  50 // { dg-final { note-test str "\"string\"" } }
  51
  52   optional<int> o;
  53 // { dg-final { note-test o {std::optional [no contained value]} } }
  54   optional<bool> ob{false};
  55 // { dg-final { note-test ob {std::optional = {[contained value] = false}} } }
  56   optional<int> oi{5};
  57 // { dg-final { note-test oi {std::optional = {[contained value] = 5}} } }
  58   optional<void*> op{nullptr};
  59 // { dg-final { note-test op {std::optional = {[contained value] = 0x0}} } }
  60   optional<std::map<int, double>> om;
  61   om = std::map<int, double>{ {1, 2.}, {3, 4.}, {5, 6.} };
  62 // { dg-final { regexp-test om {std::optional containing std::(__debug::)?map with 3 elements = {\[1\] = 2, \[3\] = 4, \[5\] = 6}} } }
  63   optional<std::string> os{ "stringy" };
  64 // { dg-final { note-test os {std::optional = {[contained value] = "stringy"}} } }
  65
  66   any a;
  67 // { dg-final { note-test a {std::any [no contained value]} } }
  68   any ab(false);
  69 // { dg-final { note-test ab {std::any containing bool = {[contained value] = false}} } }
  70   any ai(6);
  71 // { dg-final { note-test ai {std::any containing int = {[contained value] = 6}} } }
  72   any ap = (void*)nullptr;
  73 // { dg-final { note-test ap {std::any containing void * = {[contained value] = 0x0}} } }
  74   any as = *os;
  75 // { dg-final { note-test as {std::any containing std::string = {[contained value] = "stringy"}} } }
  76   any as2("stringiest");
  77 // { dg-final { regexp-test as2 {std::any containing const char \* = {\[contained value\] = 0x[[:xdigit:]]+ "stringiest"}} } }
  78   any am = *om;
  79 // { dg-final { regexp-test am {std::any containing std::(__debug::)?map with 3 elements = {\[1\] = 2, \[3\] = 4, \[5\] = 6}} } }
  80   struct local_type { int i = 99; };
  81   any al = local_type{};
  82 // { dg-final { note-test al {std::any containing local_type = {[contained value] = {i = 99}}} } }
  83
  84   struct S { operator int() { throw 42; }};
  85   variant<float, int, string_view> v0;
  86 // { dg-final { note-test v0 {std::variant [index 0] = {0}} } }
  87   variant<float, int, string_view> v1{ 0.5f };
  88 // { dg-final { note-test v1 {std::variant [index 0] = {0.5}} } }
  89   variant<float, X, string_view> v2;
  90   try {
  91     v2.emplace<1>(S());
  92   } catch (int) { }
  93 // { dg-final { note-test v2 {std::variant [no contained value]} } }
  94   variant<float, int, string_view> v3{ 3 };
  95 // { dg-final { note-test v3 {std::variant [index 1] = {3}} } }
  96   variant<float, int, string_view> v4{ str };
  97 // { dg-final { note-test v4 {std::variant [index 2] = {"string"}} } }
  98
  99   map<int, string_view> m{ {1, "one"} };
 100   map<int, string_view>::node_type n0;
 101 // { dg-final { note-test n0 {empty node handle for map}}}
 102   map<int, string_view>::node_type n1 = m.extract(1);
 103 // { dg-final { note-test n1 {node handle for map with element = {{first = 1, second = "two"}}}}}
 104
 105   unordered_set<int> s{ 3, 4 };
 106   unordered_set<int>::node_type n2;
 107 // { dg-final { note-test n2 {empty node handle for unordered set}}}
 108   unordered_set<int>::node_type n3 = s.extract(3);
 109 // { dg-final { note-test n1 {node handle for unordered set with element = {3}}}}
 110
 111   shared_ptr<int[]> p(new int[1]);
 112   weak_ptr wp = p;
 113   weak_ptr wp2 = p;
 114 // { dg-final { regexp-test p {std::shared_ptr.int \[\]. \(use count 1, weak count 2\) = {get\(\) = 0x.*}} } }
 115 // { dg-final { regexp-test wp {std::weak_ptr.int \[\]. \(use count 1, weak count 2\) = {get\(\) = 0x.*}} } }
 116
 117   shared_ptr<int[2]> q(new int[2]);
 118   shared_ptr q2 = q;
 119   weak_ptr wq = q;
 120 // { dg-final { regexp-test q {std::shared_ptr.int \[2\]. \(use count 2, weak count 1\) = {get\(\) = 0x.*}} } }
 121 // { dg-final { regexp-test wq {std::weak_ptr.int \[2\]. \(use count 2, weak count 1\) = {get\(\) = 0x.*}} } }
 122
 123   std::filesystem::path path0;
 124 // { dg-final { note-test path0 {filesystem::path ""} } }
 125   std::filesystem::path path1("filename");
 126 // { dg-final { note-test path1 {filesystem::path "filename"} } }
 127   std::filesystem::path path2("/dir/.");
 128 // { dg-final { note-test path2 {filesystem::path "/dir/." = {[root-directory] = "/", [1] = "dir", [2] = "."}} } }
 129
 130   std::cout << "\n";
 131   return 0;                     // Mark SPOT
 132 }
 133
 134 // { dg-final { gdb-test SPOT } }