| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: no-threads |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // REQUIRES: libcpp-hardening-mode={{extensive|debug}} |
| |
| // XFAIL: availability-verbose_abort-missing |
| |
| // REQUIRES: has-unix-headers |
| |
| // <semaphore> |
| |
| // constexpr explicit counting_semaphore(ptrdiff_t __count); |
| |
| // Make sure that constructing counting_semaphore with a negative value triggers an assertion |
| |
| #include <semaphore> |
| |
| #include "check_assertion.h" |
| |
| int main(int, char**) { |
| { |
| TEST_LIBCPP_ASSERT_FAILURE( |
| [] { std::counting_semaphore<> s(-1); }(), |
| "counting_semaphore::counting_semaphore(ptrdiff_t): counting_semaphore cannot be " |
| "initialized with a negative value"); |
| } |
| // We can't check the precondition for max() because there's no value |
| // that would violate the precondition (in our implementation) |
| |
| return 0; |
| } |
