libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/overflow.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 strstreambuf
  14
  15 // int_type overflow(int_type c = EOF);
  16
  17 #include <strstream>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25         char buf[12] = "abc";
  26         std::strstreambuf sb(buf, sizeof(buf), buf);
  27         assert(sb.sputc('1') == '1');
  28         assert(sb.str() == std::string("1bc"));
  29         assert(sb.sputc('2') == '2');
  30         assert(sb.str() == std::string("12c"));
  31         assert(sb.sputc('3') == '3');
  32         assert(sb.str() == std::string("123"));
  33         assert(sb.sputc('4') == '4');
  34         assert(sb.str() == std::string("1234"));
  35         assert(sb.sputc('5') == '5');
  36         assert(sb.str() == std::string("12345"));
  37         assert(sb.sputc('6') == '6');
  38         assert(sb.str() == std::string("123456"));
  39         assert(sb.sputc('7') == '7');
  40         assert(sb.str() == std::string("1234567"));
  41         assert(sb.sputc('8') == '8');
  42         assert(sb.str() == std::string("12345678"));
  43         assert(sb.sputc('9') == '9');
  44         assert(sb.str() == std::string("123456789"));
  45         assert(sb.sputc('0') == '0');
  46         assert(sb.str() == std::string("1234567890"));
  47         assert(sb.sputc('1') == '1');
  48         assert(sb.str() == std::string("12345678901"));
  49     }
  50
  51   return 0;
  52 }