| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <regex> |
| |
| // class match_results<BidirectionalIterator, Allocator> |
| // bool empty() const; |
| |
| // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 |
| // UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7, clang-3.8 |
| |
| #include <regex> |
| |
| #include "test_macros.h" |
| |
| int main () |
| { |
| std::match_results<const char*> c; |
| c.empty(); // expected-error {{ignoring return value of function declared with 'nodiscard' attribute}} |
| } |
