test: Suppress exception-required tests.

test/input.output/iostreams.base/ios/iostate.flags/exceptions_iostate.xfail.pass.cpp

@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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
+
+// iostate exceptions() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+struct testbuf : public std::streambuf {};
+
+int main()
+{
+    {
+        std::ios ios(0);
+        assert(ios.exceptions() == std::ios::goodbit);
+        ios.exceptions(std::ios::eofbit);
+        assert(ios.exceptions() == std::ios::eofbit);
+        try
+        {
+            ios.exceptions(std::ios::badbit);
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+        }
+        assert(ios.exceptions() == std::ios::badbit);
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(ios.exceptions() == std::ios::goodbit);
+        ios.exceptions(std::ios::eofbit);
+        assert(ios.exceptions() == std::ios::eofbit);
+        ios.exceptions(std::ios::badbit);
+        assert(ios.exceptions() == std::ios::badbit);
+    }
+}