1 files changed, 41 insertions, 0 deletions
diff --git a/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp b/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp
new file mode 100644
index 000000000000..fa9f765bfd59
--- /dev/null
+++ b/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool fail() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+struct testbuf : public std::streambuf {};
+
+int main()
+{
+    {
+        std::ios ios(0);
+        assert(ios.fail());
+        ios.setstate(std::ios::eofbit);
+        assert(ios.fail());
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(!ios.fail());
+        ios.setstate(std::ios::eofbit);
+        assert(!ios.fail());
+        ios.setstate(std::ios::badbit);
+        assert(ios.fail());
+        ios.setstate(std::ios::failbit);
+        assert(ios.fail());
+    }
+}