libstdc++-v3/testsuite/21_strings/basic_string/operators/char/65630.cc

   1 // Copyright (C) 2015-2021 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-fno-implicit-templates -O0" }
  19 // { dg-do link { target c++11 } }
  20
  21 #include <string>
  22
  23 void test01()
  24 {
  25   std::string t;
  26   t = t + t;
  27   t = "" + t;
  28   t = 't' + t;
  29 }
  30
  31 int main()
  32 {
  33   test01();
  34 }