push_back.pass.cpp (1342B)
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 // void push_back(charT c) 13 14 #include <string> 15 #include <cassert> 16 17 #include "test_macros.h" 18 #include "min_allocator.h" 19 20 struct veryLarge 21 { 22 long long a; 23 char b; 24 }; 25 26 template <class S> 27 void 28 test(S s, typename S::value_type c, S expected) 29 { 30 s.push_back(c); 31 LIBCPP_ASSERT(s.__invariants()); 32 assert(s == expected); 33 } 34 35 int main() 36 { 37 { 38 typedef std::string S; 39 test(S(), 'a', S(1, 'a')); 40 test(S("12345"), 'a', S("12345a")); 41 test(S("12345678901234567890"), 'a', S("12345678901234567890a")); 42 } 43 #if TEST_STD_VER >= 11 44 { 45 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 46 test(S(), 'a', S(1, 'a')); 47 test(S("12345"), 'a', S("12345a")); 48 test(S("12345678901234567890"), 'a', S("12345678901234567890a")); 49 } 50 #endif 51 52 { 53 // https://bugs.llvm.org/show_bug.cgi?id=31454 54 std::basic_string<veryLarge> s; 55 veryLarge vl = {}; 56 s.push_back(vl); 57 s.push_back(vl); 58 s.push_back(vl); 59 } 60 }