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author | Marshall Clow <mclow.lists@gmail.com> | 2017-11-16 04:48:34 +0000 |
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committer | Marshall Clow <mclow.lists@gmail.com> | 2017-11-16 04:48:34 +0000 |
commit | 79f3f9dbedd0acfc5bf96238336986500014d82a (patch) | |
tree | 8fd50da5b493bcc01c66094ac419aa35d0d328a9 /test | |
parent | f1729d90b38c7f681379e9a219e08c681279ab57 (diff) |
More of P0600 - '[[nodiscard]] in the Library' mark empty() as nodiscard in match_results. <regex>
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@318375 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/std/re/re.results/re.results.size/empty.fail.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/std/re/re.results/re.results.size/empty.fail.cpp b/test/std/re/re.results/re.results.size/empty.fail.cpp new file mode 100644 index 000000000..6f677f390 --- /dev/null +++ b/test/std/re/re.results/re.results.size/empty.fail.cpp @@ -0,0 +1,27 @@ +// -*- 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}} +} |