| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <array> |
| |
| // const_reference at (size_type) const; // constexpr in C++14 |
| |
| // GCC 5 doesn't implement the required constexpr support |
| // UNSUPPORTED: gcc-5 |
| |
| #include <array> |
| #include <cassert> |
| |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| #include <stdexcept> |
| #endif |
| |
| #include "test_macros.h" |
| |
| // std::array is explicitly allowed to be initialized with A a = { init-list };. |
| // Disable the missing braces warning for this reason. |
| #include "disable_missing_braces_warning.h" |
| |
| |
| TEST_CONSTEXPR_CXX14 bool tests() |
| { |
| { |
| typedef double T; |
| typedef std::array<T, 3> C; |
| C const c = {1, 2, 3.5}; |
| typename C::const_reference r1 = c.at(0); |
| assert(r1 == 1); |
| |
| typename C::const_reference r2 = c.at(2); |
| assert(r2 == 3.5); |
| } |
| return true; |
| } |
| |
| void test_exceptions() |
| { |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| std::array<int, 4> const array = {1, 2, 3, 4}; |
| |
| try { |
| TEST_IGNORE_NODISCARD array.at(4); |
| assert(false); |
| } catch (std::out_of_range const&) { |
| // pass |
| } catch (...) { |
| assert(false); |
| } |
| |
| try { |
| TEST_IGNORE_NODISCARD array.at(5); |
| assert(false); |
| } catch (std::out_of_range const&) { |
| // pass |
| } catch (...) { |
| assert(false); |
| } |
| |
| try { |
| TEST_IGNORE_NODISCARD array.at(6); |
| assert(false); |
| } catch (std::out_of_range const&) { |
| // pass |
| } catch (...) { |
| assert(false); |
| } |
| |
| try { |
| using size_type = decltype(array)::size_type; |
| TEST_IGNORE_NODISCARD array.at(static_cast<size_type>(-1)); |
| assert(false); |
| } catch (std::out_of_range const&) { |
| // pass |
| } catch (...) { |
| assert(false); |
| } |
| } |
| |
| { |
| std::array<int, 0> array = {}; |
| |
| try { |
| TEST_IGNORE_NODISCARD array.at(0); |
| assert(false); |
| } catch (std::out_of_range const&) { |
| // pass |
| } catch (...) { |
| assert(false); |
| } |
| } |
| #endif |
| } |
| |
| int main(int, char**) |
| { |
| tests(); |
| test_exceptions(); |
| |
| #if TEST_STD_VER >= 14 |
| static_assert(tests(), ""); |
| #endif |
| return 0; |
| } |