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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 // <string>
     11 
     12 // template<class charT, class traits, class Allocator>
     13 //   bool operator!=(const basic_string<charT, traits, Allocator> &lhs, basic_string_view<charT,traits> rhs);
     14 // template<class charT, class traits, class Allocator>
     15 //   bool operator!=(basic_string_view<charT,traits> lhs, const basic_string<charT, traits, Allocator> &rhs);
     16 
     17 #include <experimental/string_view>
     18 #include <cassert>
     19 
     20 template <class S>
     21 void
     22 test(const std::string &lhs, S rhs, bool x)
     23 {
     24     assert((lhs != rhs) == x);
     25     assert((rhs != lhs) == x);
     26 }
     27 
     28 int main()
     29 {
     30     {
     31     typedef std::experimental::string_view S;
     32     test("", S(""), false);
     33     test("", S("abcde"), true);
     34     test("", S("abcdefghij"), true);
     35     test("", S("abcdefghijklmnopqrst"), true);
     36     test("abcde", S(""), true);
     37     test("abcde", S("abcde"), false);
     38     test("abcde", S("abcdefghij"), true);
     39     test("abcde", S("abcdefghijklmnopqrst"), true);
     40     test("abcdefghij", S(""), true);
     41     test("abcdefghij", S("abcde"), true);
     42     test("abcdefghij", S("abcdefghij"), false);
     43     test("abcdefghij", S("abcdefghijklmnopqrst"), true);
     44     test("abcdefghijklmnopqrst", S(""), true);
     45     test("abcdefghijklmnopqrst", S("abcde"), true);
     46     test("abcdefghijklmnopqrst", S("abcdefghij"), true);
     47     test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
     48     }
     49 }
     50