libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.dest/rdbuf.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 -D_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM
  10
  11 // <strstream>
  12
  13 // class strstream
  14
  15 // strstreambuf* rdbuf() const;
  16
  17 #include <strstream>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25         char buf[] = "123 4.5 dog";
  26         const std::strstream out(buf, 0);
  27         std::strstreambuf* sb = out.rdbuf();
  28         assert(sb->sputc('a') == 'a');
  29         assert(buf == std::string("a23 4.5 dog"));
  30     }
  31
  32   return 0;
  33 }