| //===----------------------------------------------------------------------===// |
| // |
| // 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 resize(size_type n); |
| |
| // When back-deploying to macosx10.7, the RTTI for exception classes |
| // incorrectly provided by libc++.dylib is mixed with the one in |
| // libc++abi.dylib and exceptions are not caught properly. |
| // XFAIL: with_system_cxx_lib=macosx10.7 |
| |
| #include <string> |
| #include <stdexcept> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "min_allocator.h" |
| |
| template <class S> |
| void |
| test(S s, typename S::size_type n, S expected) |
| { |
| if (n <= s.max_size()) |
| { |
| s.resize(n); |
| LIBCPP_ASSERT(s.__invariants()); |
| assert(s == expected); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| else |
| { |
| try |
| { |
| s.resize(n); |
| assert(false); |
| } |
| catch (std::length_error&) |
| { |
| assert(n > s.max_size()); |
| } |
| } |
| #endif |
| } |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::string S; |
| test(S(), 0, S()); |
| test(S(), 1, S(1, '\0')); |
| test(S(), 10, S(10, '\0')); |
| test(S(), 100, S(100, '\0')); |
| test(S("12345"), 0, S()); |
| test(S("12345"), 2, S("12")); |
| test(S("12345"), 5, S("12345")); |
| test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15)); |
| test(S("12345678901234567890123456789012345678901234567890"), 0, S()); |
| test(S("12345678901234567890123456789012345678901234567890"), 10, |
| S("1234567890")); |
| test(S("12345678901234567890123456789012345678901234567890"), 50, |
| S("12345678901234567890123456789012345678901234567890")); |
| test(S("12345678901234567890123456789012345678901234567890"), 60, |
| S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60)); |
| test(S(), S::npos, S("not going to happen")); |
| } |
| #if TEST_STD_VER >= 11 |
| { |
| typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; |
| test(S(), 0, S()); |
| test(S(), 1, S(1, '\0')); |
| test(S(), 10, S(10, '\0')); |
| test(S(), 100, S(100, '\0')); |
| test(S("12345"), 0, S()); |
| test(S("12345"), 2, S("12")); |
| test(S("12345"), 5, S("12345")); |
| test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15)); |
| test(S("12345678901234567890123456789012345678901234567890"), 0, S()); |
| test(S("12345678901234567890123456789012345678901234567890"), 10, |
| S("1234567890")); |
| test(S("12345678901234567890123456789012345678901234567890"), 50, |
| S("12345678901234567890123456789012345678901234567890")); |
| test(S("12345678901234567890123456789012345678901234567890"), 60, |
| S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60)); |
| test(S(), S::npos, S("not going to happen")); |
| } |
| #endif |
| |
| return 0; |
| } |