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 // basic_string<charT,traits,Allocator> 14 // operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); 15 16 // template<class charT, class traits, class Allocator> 17 // basic_string<charT,traits,Allocator>&& 18 // operator+(charT lhs, basic_string<charT,traits,Allocator>&& rhs); 19 20 #include <string> 21 #include <utility> 22 #include <cassert> 23 24 #include "min_allocator.h" 25 26 template <class S> 27 void 28 test0(typename S::value_type lhs, const S& rhs, const S& x) 29 { 30 assert(lhs + rhs == x); 31 } 32 33 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 34 35 template <class S> 36 void 37 test1(typename S::value_type lhs, S&& rhs, const S& x) 38 { 39 assert(lhs + move(rhs) == x); 40 } 41 42 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 43 44 int main() 45 { 46 { 47 typedef std::string S; 48 test0('a', S(""), S("a")); 49 test0('a', S("12345"), S("a12345")); 50 test0('a', S("1234567890"), S("a1234567890")); 51 test0('a', S("12345678901234567890"), S("a12345678901234567890")); 52 53 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 54 55 test1('a', S(""), S("a")); 56 test1('a', S("12345"), S("a12345")); 57 test1('a', S("1234567890"), S("a1234567890")); 58 test1('a', S("12345678901234567890"), S("a12345678901234567890")); 59 60 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 61 } 62 #if TEST_STD_VER >= 11 63 { 64 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 65 test0('a', S(""), S("a")); 66 test0('a', S("12345"), S("a12345")); 67 test0('a', S("1234567890"), S("a1234567890")); 68 test0('a', S("12345678901234567890"), S("a12345678901234567890")); 69 70 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 71 72 test1('a', S(""), S("a")); 73 test1('a', S("12345"), S("a12345")); 74 test1('a', S("1234567890"), S("a1234567890")); 75 test1('a', S("12345678901234567890"), S("a12345678901234567890")); 76 77 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 78 } 79 #endif 80 } 81