1 files changed, 9 insertions, 0 deletions
diff --git a/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp b/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp
index 0de889e549cc..4e3faa27c401 100644
--- a/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp
+++ b/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp
@@ -14,12 +14,21 @@
 // operator unspecified-bool-type() const;
 
 #include <ios>
+#include <type_traits>
 #include <cassert>
 
+#include "test_macros.h"
+
 int main()
 {
     std::ios ios(0);
     assert(static_cast<bool>(ios) == !ios.fail());
     ios.setstate(std::ios::failbit);
     assert(static_cast<bool>(ios) == !ios.fail());
+    static_assert((!std::is_convertible<std::ios, void*>::value), "");
+    static_assert((!std::is_convertible<std::ios, int>::value), "");
+    static_assert((!std::is_convertible<std::ios const&, int>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((!std::is_convertible<std::ios, bool>::value), "");
+#endif
 }