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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 // <tuple>
     11 
     12 // template <class... Types> class tuple;
     13 
     14 // tuple& operator=(const tuple& u);
     15 
     16 #include <tuple>
     17 #include <string>
     18 #include <cassert>
     19 
     20 int main()
     21 {
     22     {
     23         typedef std::tuple<> T;
     24         T t0;
     25         T t;
     26         t = t0;
     27     }
     28     {
     29         typedef std::tuple<int> T;
     30         T t0(2);
     31         T t;
     32         t = t0;
     33         assert(std::get<0>(t) == 2);
     34     }
     35     {
     36         typedef std::tuple<int, char> T;
     37         T t0(2, 'a');
     38         T t;
     39         t = t0;
     40         assert(std::get<0>(t) == 2);
     41         assert(std::get<1>(t) == 'a');
     42     }
     43     {
     44         typedef std::tuple<int, char, std::string> T;
     45         const T t0(2, 'a', "some text");
     46         T t;
     47         t = t0;
     48         assert(std::get<0>(t) == 2);
     49         assert(std::get<1>(t) == 'a');
     50         assert(std::get<2>(t) == "some text");
     51     }
     52 }
     53