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   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: c++03, c++11, c++14
  10 // <optional>
  11
  12 // constexpr const T& optional<T>::operator*() const &;
  13
  14 // UNSUPPORTED: libcxx-no-debug-mode
  15
  16 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEBUG=1
  17
  18 #include <optional>
  19
  20 #include "test_macros.h"
  21 #include "debug_macros.h"
  22
  23 int main(int, char**) {
  24     const std::optional<int> opt;
  25     TEST_LIBCPP_ASSERT_FAILURE(*opt, "optional operator* called on a disengaged value");
  26
  27     return 0;
  28 }