libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/freeze.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 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  10
  11 // <strstream>
  12
  13 // class ostrstream
  14
  15 // void freeze(bool freezefl = true);
  16
  17 #include <strstream>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25         std::ostrstream out;
  26         out.freeze();
  27         assert(!out.fail());
  28         out << 'a';
  29         assert(out.fail());
  30         out.clear();
  31         out.freeze(false);
  32         out << 'a';
  33         out << char(0);
  34         assert(out.str() == std::string("a"));
  35         out.freeze(false);
  36     }
  37
  38   return 0;
  39 }