Disable TestDataFormatterStdMap.test_with_dsym_and_run_command on Darwin

See http://llvm.org/bugs/show_bug.cgi?id=20263

llvm-svn: 212645

lldb/test/functionalities/data-formatter/data-formatter-stl/libstdcpp/map/TestDataFormatterStdMap.py

@@ -14,6 +14,7 @@ class StdMapDataFormatterTestCase(TestBase):
 
     @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
     @dsym_test
+    @expectedFailureDarwin("llvm.org/pr20263")
     def test_with_dsym_and_run_command(self):
         """Test data formatter commands."""
         self.buildDsym()