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 // UNSUPPORTED: no-exceptions
10 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
11 
12 // Prior to http://llvm.org/D123580, there was a bug with how the max_size()
13 // was calculated. That was inlined into some functions in the dylib, which leads
14 // to failures when running this test against an older system dylib.
15 // XFAIL: use_system_cxx_lib && target=arm64-apple-macosx{{11.0|12.0}}
16 
17 // <string>
18 
19 // size_type max_size() const; // constexpr since C++20
20 
21 #include <string>
22 #include <cassert>
23 #include <stdexcept>
24 
25 #include "test_macros.h"
26 #include "min_allocator.h"
27 
28 template <class S>
29 void
test(const S & s)30 test(const S& s)
31 {
32     assert(s.max_size() >= s.size());
33     S s2(s);
34     const size_t sz = s2.max_size() + 1;
35     try { s2.resize(sz, 'x'); }
36     catch ( const std::length_error & ) { return ; }
37     assert ( false );
38 }
39 
test()40 bool test() {
41   {
42     typedef std::string S;
43     test(S());
44     test(S("123"));
45     test(S("12345678901234567890123456789012345678901234567890"));
46   }
47 #if TEST_STD_VER >= 11
48   {
49     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
50     test(S());
51     test(S("123"));
52     test(S("12345678901234567890123456789012345678901234567890"));
53   }
54 #endif
55 
56   return true;
57 }
58 
main(int,char **)59 int main(int, char**)
60 {
61   test();
62 
63   return 0;
64 }
65