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29c7e6c8c9
calls to commonly un-overridden methods into a function that checks whether the method is overridden anywhere and if not directly dispatches to the NSObject implementation. That means if you do override any of these methods, "step-in" will not step into your code, since we hit the wrapper function, which has no debug info, and immediately step out again. Add code to recognize these functions as "trampolines" and a thread plan that will get us from the function to the user code, if overridden. <rdar://problem/54404114> Differential Revision: https://reviews.llvm.org/D73225
51 lines
2.0 KiB
Python
51 lines
2.0 KiB
Python
"""Test stepping through ObjC method dispatch in various forms."""
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from __future__ import print_function
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class TestObjCDirectDispatchStepping(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line numbers that we will step to in main:
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self.main_source = lldb.SBFileSpec("stepping-tests.m")
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@skipUnlessDarwin
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@add_test_categories(['pyapi', 'basic_process'])
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def test_with_python_api(self):
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"""Test stepping through the 'direct dispatch' optimized method calls."""
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self.build()
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(target, process, thread, bkpt) = lldbutil.run_to_source_breakpoint(self,
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"Stop here to start stepping",
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self.main_source)
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stop_bkpt = target.BreakpointCreateBySourceRegex("// Stop Location [0-9]+", self.main_source)
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self.assertEqual(stop_bkpt.GetNumLocations(), 15)
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# Here we step through all the overridden methods of OverridesALot
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# The last continue will get us to the call ot OverridesInit.
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for idx in range(2,16):
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thread.StepInto()
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func_name = thread.GetFrameAtIndex(0).GetFunctionName()
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self.assertTrue("OverridesALot" in func_name, "%d'th step did not match name: %s"%(idx, func_name))
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stop_threads = lldbutil.continue_to_breakpoint(process, stop_bkpt)
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self.assertEqual(len(stop_threads), 1)
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self.assertEqual(stop_threads[0], thread)
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thread.StepInto()
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func_name = thread.GetFrameAtIndex(0).GetFunctionName()
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self.assertEqual(func_name, "-[OverridesInit init]", "Stopped in [OverridesInit init]")
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