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authorMarshall Clow <mclow.lists@gmail.com>2017-11-16 04:48:34 +0000
committerMarshall Clow <mclow.lists@gmail.com>2017-11-16 04:48:34 +0000
commit79f3f9dbedd0acfc5bf96238336986500014d82a (patch)
tree8fd50da5b493bcc01c66094ac419aa35d0d328a9 /test
parentf1729d90b38c7f681379e9a219e08c681279ab57 (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.cpp27
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}}
+}