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