| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <string> |
| |
| // void reserve(size_type res_arg); |
| |
| // This test relies on https://llvm.org/PR45368 being fixed, which isn't in |
| // older Apple dylibs |
| // |
| // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}} |
| |
| #include <string> |
| #include <stdexcept> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "min_allocator.h" |
| |
| template <class S> |
| void |
| test(typename S::size_type min_cap, typename S::size_type erased_index, typename S::size_type res_arg) |
| { |
| S s(min_cap, 'a'); |
| s.erase(erased_index); |
| assert(s.size() == erased_index); |
| assert(s.capacity() >= min_cap); // Check that we really have at least this capacity. |
| |
| #if TEST_STD_VER > 17 |
| typename S::size_type old_cap = s.capacity(); |
| #endif |
| S s0 = s; |
| if (res_arg <= s.max_size()) |
| { |
| s.reserve(res_arg); |
| LIBCPP_ASSERT(s.__invariants()); |
| assert(s == s0); |
| assert(s.capacity() >= res_arg); |
| assert(s.capacity() >= s.size()); |
| #if TEST_STD_VER > 17 |
| assert(s.capacity() >= old_cap); // reserve never shrinks as of P0966 (C++20) |
| #endif |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| else |
| { |
| try |
| { |
| s.reserve(res_arg); |
| LIBCPP_ASSERT(s.__invariants()); |
| assert(false); |
| } |
| catch (std::length_error&) |
| { |
| assert(res_arg > s.max_size()); |
| } |
| } |
| #endif |
| } |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::string S; |
| { |
| test<S>(0, 0, 5); |
| test<S>(0, 0, 10); |
| test<S>(0, 0, 50); |
| } |
| { |
| test<S>(100, 50, 5); |
| test<S>(100, 50, 10); |
| test<S>(100, 50, 50); |
| test<S>(100, 50, 100); |
| test<S>(100, 50, 1000); |
| test<S>(100, 50, S::npos); |
| } |
| } |
| #if TEST_STD_VER >= 11 |
| { |
| typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; |
| { |
| test<S>(0, 0, 5); |
| test<S>(0, 0, 10); |
| test<S>(0, 0, 50); |
| } |
| { |
| test<S>(100, 50, 5); |
| test<S>(100, 50, 10); |
| test<S>(100, 50, 50); |
| test<S>(100, 50, 100); |
| test<S>(100, 50, 1000); |
| test<S>(100, 50, S::npos); |
| } |
| } |
| #endif |
| |
| return 0; |
| } |