libstdc++-v3/testsuite/21_strings/basic_string/modifiers/append/char/4.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2016-2024 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // [string.modifiers]
  21
  22 #include <string>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test03()
  27 {
  28   std::string_view str1("foo");
  29   std::string str2;
  30   str2 += str1;
  31   VERIFY (str2 == str1);
  32   std::string str3;
  33   str3.append(str1);
  34   VERIFY (str3 == str1);
  35   std::string str4;
  36   str4.append(str1, 1, 2);
  37   VERIFY (str4 == "oo");
  38 }
  39
  40 // PR libstdc++/77264
  41 void
  42 test04()
  43 {
  44   std::string str("a");
  45   char c = 'b';
  46   str.append(&c, 1);
  47   VERIFY (str[1] == c);
  48
  49   char arr[] = "c";
  50   str.append(arr, 1);
  51   VERIFY (str[2] == arr[0]);
  52
  53   const char carr[] = "d";
  54   str.append(carr, 1);
  55   VERIFY (str[3] == carr[0]);
  56
  57   struct S {
  58     operator char*() { return &c; }
  59     operator std::string_view() { return "!"; }
  60     char c = 'e';
  61   };
  62
  63   str.append(S{}, 1);
  64   VERIFY (str[4] == S{}.c);
  65 }
  66
  67 int main()
  68 {
  69   test03();
  70   test04();
  71   return 0;
  72 }