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 pop_back();
13
14 #if _LIBCPP_DEBUG >= 1
15 #define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
16 #endif
17
18 #include <string>
19 #include <cassert>
20
21 #include "min_allocator.h"
22
23 template <class S>
24 void
test(S s,S expected)25 test(S s, S expected)
26 {
27 s.pop_back();
28 assert(s.__invariants());
29 assert(s == expected);
30 }
31
main()32 int main()
33 {
34 {
35 typedef std::string S;
36 test(S("abcde"), S("abcd"));
37 test(S("abcdefghij"), S("abcdefghi"));
38 test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrs"));
39 }
40 #if __cplusplus >= 201103L
41 {
42 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
43 test(S("abcde"), S("abcd"));
44 test(S("abcdefghij"), S("abcdefghi"));
45 test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrs"));
46 }
47 #endif
48 #if _LIBCPP_DEBUG >= 1
49 {
50 std::string s;
51 s.pop_back();
52 assert(false);
53 }
54 #endif
55 }
56