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1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <strstream>
11 
12 // class strstreambuf
13 
14 // void freeze(bool freezefl = true);
15 
16 #include <strstream>
17 #include <cassert>
18 
main()19 int main()
20 {
21     {
22         std::strstreambuf sb;
23         sb.freeze(true);
24         assert(sb.sputc('a') == EOF);
25         sb.freeze(false);
26         assert(sb.sputc('a') == 'a');
27     }
28 }
29