[lldbsuite, windows] Disable two tail call frames tests that fail on Windows

[stella.stamenova]

Summary

These tests fail on Windows because of known limitations (a.k.a. bugs) with the current implementation of GetFrameAtIndex

[vsk]

Thanks, lgtm.

packages/Python/lldbsuite/test/functionalities/tail_call_frames/sbapi_support/TestTailCallFrameSBAPI.py

 """
 Test SB API support for identifying artificial (tail call) frames.
 """
 
 import lldb
 import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 
 class TestTailCallFrameSBAPI(TestBase):
     mydir = TestBase.compute_mydir(__file__)
 
     # If your test case doesn't stress debug info, the
     # set this to true.  That way it won't be run once for
     # each debug info format.
     NO_DEBUG_INFO_TESTCASE = True
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr26265")
     def test_tail_call_frame_sbapi(self):
         self.build()
         self.do_test()
 
     def setUp(self):
         # Call super's setUp().
         TestBase.setUp(self)
 

packages/Python/lldbsuite/test/functionalities/tail_call_frames/thread_step_out_or_return/TestSteppingOutWithArtificialFrames.py

 """
 Test SB API support for identifying artificial (tail call) frames.
 """
 
 import lldb
 import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.decorators import *
 from lldbsuite.test.lldbtest import *
 
 class TestArtificialFrameThreadStepOut1(TestBase):
     mydir = TestBase.compute_mydir(__file__)
 
     # If your test case doesn't stress debug info, the
     # set this to true.  That way it won't be run once for
     # each debug info format.
def prepare_thread(self):
         # Here's what we expect to see in the backtrace:
         #   frame #0: ... a.out`sink() at main.cpp:13:4 [opt]
         #   frame #1: ... a.out`func3() at main.cpp:14:1 [opt] [artificial]
         #   frame #2: ... a.out`func2() at main.cpp:18:62 [opt]
         #   frame #3: ... a.out`func1() at main.cpp:18:85 [opt] [artificial]
         #   frame #4: ... a.out`main at main.cpp:23:3 [opt]
         return thread
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr26265")
     def test_stepping_out_past_artificial_frame(self):
         self.build()
         thread = self.prepare_thread()
 
         # Frame #0's ancestor is artificial. Stepping out should move to
         # frame #2, because we behave as-if artificial frames were not present.
         thread.StepOut()
         frame2 = thread.GetSelectedFrame()
         self.assertEqual(frame2.GetDisplayFunctionName(), "func2()")
         self.assertFalse(frame2.IsArtificial())
 
         # Ditto: stepping out of frame #2 should move to frame #4.
         thread.StepOut()
         frame4 = thread.GetSelectedFrame()
         self.assertEqual(frame4.GetDisplayFunctionName(), "main")
         self.assertFalse(frame2.IsArtificial())
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr26265")
     def test_return_past_artificial_frame(self):
         self.build()
         thread = self.prepare_thread()
 
         value = lldb.SBValue()
 
         # Frame #0's ancestor is artificial. Returning from frame #0 should move
         # to frame #2.