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
test(S s,typename S::value_type c,S expected)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
main()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 }
61