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 // void freeze(bool freezefl = true);
16 
17 #include <strstream>
18 #include <cassert>
19 
20 #include "test_macros.h"
21 
main(int,char **)22 int main(int, char**)
23 {
24     {
25         std::strstream 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 }
40