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 // UNSUPPORTED: c++98, c++03, c++11 11 // <vector> 12 // vector.bool 13 14 // template <class... Args> reference emplace_back(Args&&... args); 15 // return type is 'reference' in C++17; 'void' before 16 17 #include <vector> 18 #include <cassert> 19 #include "test_macros.h" 20 #include "min_allocator.h" 21 22 int main() 23 { 24 { 25 typedef std::vector<bool> C; 26 C c; 27 #if TEST_STD_VER > 14 28 typedef C::reference Ref; 29 Ref r1 = c.emplace_back(); 30 assert(c.size() == 1); 31 assert(c.front() == false); 32 r1 = true; 33 assert(c.front() == true); 34 r1 = false; 35 Ref r2 = c.emplace_back(true); 36 assert(c.size() == 2); 37 assert(c.front() == false); 38 assert(c.back() == true); 39 r2 = false; 40 assert(c.back() == false); 41 r2 = true; 42 #else 43 c.emplace_back(); 44 assert(c.size() == 1); 45 assert(c.front() == false); 46 c.emplace_back(true); 47 assert(c.size() == 2); 48 assert(c.front() == false); 49 assert(c.back() == true); 50 #endif 51 c.emplace_back(true); 52 assert(c.size() == 3); 53 assert(c.front() == false); 54 assert(c[1] == true); 55 assert(c.back() == true); 56 } 57 { 58 typedef std::vector<bool, min_allocator<bool>> C; 59 C c; 60 61 #if TEST_STD_VER > 14 62 typedef C::reference Ref; 63 Ref r1 = c.emplace_back(); 64 assert(c.size() == 1); 65 assert(c.front() == false); 66 r1 = true; 67 assert(c.front() == true); 68 r1 = false; 69 Ref r2 = c.emplace_back(true); 70 assert(c.size() == 2); 71 assert(c.front() == false); 72 assert(c.back() == true); 73 r2 = false; 74 assert(c.back() == false); 75 r2 = true; 76 #else 77 c.emplace_back(); 78 assert(c.size() == 1); 79 assert(c.front() == false); 80 c.emplace_back(true); 81 assert(c.size() == 2); 82 assert(c.front() == false); 83 assert(c.back() == true); 84 #endif 85 c.emplace_back(true); 86 assert(c.size() == 3); 87 assert(c.front() == false); 88 assert(c[1] == true); 89 assert(c.back() == true); 90 } 91 } 92
