xfail TestWithModuleDebugging.py on macOS

Tracked by:
https://llvm.org/bugs/show_bug.cgi?id=28156

llvm-svn: 272902

lldb/packages/Python/lldbsuite/test/lang/cpp/gmodules/TestWithModuleDebugging.py

@@ -8,6 +8,7 @@ class TestWithGmodulesDebugInfo(TestBase):
     mydir = TestBase.compute_mydir(__file__)
 
     @add_test_categories(["gmodules"])
+    @expectedFailureAll(oslist=["macosx"], bugnumber="llvm.org/pr28156")
     def test_specialized_typedef_from_pch(self):
         self.build()
         cwd = os.getcwd()