diff options
Diffstat (limited to 'test/std/utilities/optional/optional.object/optional.object.observe/value_const.fail.cpp')
| -rw-r--r-- | test/std/utilities/optional/optional.object/optional.object.observe/value_const.fail.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/std/utilities/optional/optional.object/optional.object.observe/value_const.fail.cpp b/test/std/utilities/optional/optional.object/optional.object.observe/value_const.fail.cpp new file mode 100644 index 000000000000..6076c509fa41 --- /dev/null +++ b/test/std/utilities/optional/optional.object/optional.object.observe/value_const.fail.cpp @@ -0,0 +1,33 @@ +//===----------------------------------------------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, c++11, c++14 +// <optional> + +// constexpr const T& optional<T>::value() const &; + +#include <optional> +#include <type_traits> +#include <cassert> + +using std::optional; + +struct X +{ + constexpr int test() const {return 3;} + int test() {return 4;} +}; + +int main() +{ + { + constexpr optional<X> opt; + static_assert(opt.value().test() == 3, ""); + } +} |
