[libcxx] Improve tests to use the UNSUPPORTED lit directive

Quite a few libcxx tests seem to follow the format:
 #if _LIBCPP_STD_VER > X
   // Do test.
 #else
   // Empty test.
 #endif
We should instead use the UNSUPPORTED lit directive to exclude the test on
earlier C++ standards. This gives us a more accurate number of test passes
for those standards and avoids unnecessary conflicts with other lit
directives on the same tests.

Reviewers: bcraig, ericwf, mclow.lists

Differential revision: http://reviews.llvm.org/D20730

llvm-svn: 271108

1 files changed, 2 insertions, 2 deletions

diff --git a/libcxx/test/std/experimental/optional/optional.bad_optional_access/derive.pass.cpp b/libcxx/test/std/experimental/optional/optional.bad_optional_access/derive.pass.cpp
index c13d6603990..253905681d1 100644
--- a/libcxx/test/std/experimental/optional/optional.bad_optional_access/derive.pass.cpp
+++ b/libcxx/test/std/experimental/optional/optional.bad_optional_access/derive.pass.cpp
@@ -7,6 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+// UNSUPPORTED: c++98, c++03, c++11
+
 // <optional>
 
 // class bad_optional_access : public logic_error 
@@ -16,10 +18,8 @@
 
 int main()
 {
-#if _LIBCPP_STD_VER > 11
     using std::experimental::bad_optional_access;
 
     static_assert(std::is_base_of<std::logic_error, bad_optional_access>::value, "");
     static_assert(std::is_convertible<bad_optional_access*, std::logic_error*>::value, "");
-#endif  // _LIBCPP_STD_VER > 11
 }