1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <string> 10 11 // void push_back(charT c) 12 13 #include <string> 14 #include <cassert> 15 16 #include "test_macros.h" 17 #include "min_allocator.h" 18 19 struct veryLarge 20 { 21 long long a; 22 char b; 23 }; 24 25 template <class S> 26 void 27 test(S s, typename S::value_type c, S expected) 28 { 29 s.push_back(c); 30 LIBCPP_ASSERT(s.__invariants()); 31 assert(s == expected); 32 } 33 34 int main() 35 { 36 { 37 typedef std::string S; 38 test(S(), 'a', S(1, 'a')); 39 test(S("12345"), 'a', S("12345a")); 40 test(S("12345678901234567890"), 'a', S("12345678901234567890a")); 41 } 42 #if TEST_STD_VER >= 11 43 { 44 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 45 test(S(), 'a', S(1, 'a')); 46 test(S("12345"), 'a', S("12345a")); 47 test(S("12345678901234567890"), 'a', S("12345678901234567890a")); 48 } 49 #endif 50 51 { 52 // https://bugs.llvm.org/show_bug.cgi?id=31454 53 std::basic_string<veryLarge> s; 54 veryLarge vl = {}; 55 s.push_back(vl); 56 s.push_back(vl); 57 s.push_back(vl); 58 } 59 } 60