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4a289a93f7
expectedFailureWindows is equivalent to using the general expectedFailureAll decorator with oslist="windows". Additionally, by moving towards these common decorators we can solve the issue of having to support decorators that can be called with or without arguments. Once all decorators are always called with arguments, and this is enforced by design (because you can't specify the condition you're decorating for without passing an argument) the implementation of the decorators can become much simpler Differential Revision: http://reviews.llvm.org/D16936 llvm-svn: 260134
249 lines
11 KiB
Python
249 lines
11 KiB
Python
"""Test stepping over vrs. hitting breakpoints & subsequent stepping in various forms."""
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from __future__ import print_function
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import os, time
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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 TestCStepping(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def getCategories(self):
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return ['basic_process']
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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 = "main.c"
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@add_test_categories(['pyapi'])
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@expectedFailureFreeBSD('llvm.org/pr17932')
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@expectedFailureLinux # llvm.org/pr14437
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@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24777")
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def test_and_python_api(self):
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"""Test stepping over vrs. hitting breakpoints & subsequent stepping in various forms."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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self.main_source_spec = lldb.SBFileSpec (self.main_source)
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breakpoints_to_disable = []
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break_1_in_main = target.BreakpointCreateBySourceRegex ('// frame select 2, thread step-out while stopped at .c.1..', self.main_source_spec)
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self.assertTrue(break_1_in_main, VALID_BREAKPOINT)
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breakpoints_to_disable.append (break_1_in_main)
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break_in_a = target.BreakpointCreateBySourceRegex ('// break here to stop in a before calling b', self.main_source_spec)
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self.assertTrue(break_in_a, VALID_BREAKPOINT)
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breakpoints_to_disable.append (break_in_a)
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break_in_b = target.BreakpointCreateBySourceRegex ('// thread step-out while stopped at .c.2..', self.main_source_spec)
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self.assertTrue(break_in_b, VALID_BREAKPOINT)
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breakpoints_to_disable.append (break_in_b)
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break_in_c = target.BreakpointCreateBySourceRegex ('// Find the line number of function .c. here.', self.main_source_spec)
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self.assertTrue(break_in_c, VALID_BREAKPOINT)
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breakpoints_to_disable.append (break_in_c)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# The stop reason of the thread should be breakpoint.
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_1_in_main)
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if len(threads) != 1:
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self.fail ("Failed to stop at first breakpoint in main.")
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thread = threads[0]
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# Get the stop id and for fun make sure it increases:
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old_stop_id = process.GetStopID()
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# Now step over, which should cause us to hit the breakpoint in "a"
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thread.StepOver()
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# The stop reason of the thread should be breakpoint.
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_a)
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if len(threads) != 1:
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self.fail ("Failed to stop at breakpoint in a.")
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# Check that the stop ID increases:
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new_stop_id = process.GetStopID()
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self.assertTrue(new_stop_id > old_stop_id, "Stop ID increases monotonically.")
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thread = threads[0]
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# Step over, and we should hit the breakpoint in b:
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thread.StepOver()
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_b)
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if len(threads) != 1:
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self.fail ("Failed to stop at breakpoint in b.")
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thread = threads[0]
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# Now try running some function, and make sure that we still end up in the same place
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# and with the same stop reason.
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frame = thread.GetFrameAtIndex(0)
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current_line = frame.GetLineEntry().GetLine()
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current_file = frame.GetLineEntry().GetFileSpec()
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current_bp = []
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current_bp.append(thread.GetStopReasonDataAtIndex(0))
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current_bp.append(thread.GetStopReasonDataAtIndex(1))
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stop_id_before_expression = process.GetStopID()
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stop_id_before_including_expressions = process.GetStopID(True)
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frame.EvaluateExpression ("(int) printf (print_string)")
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frame = thread.GetFrameAtIndex(0)
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self.assertTrue (current_line == frame.GetLineEntry().GetLine(), "The line stayed the same after expression.")
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self.assertTrue (current_file == frame.GetLineEntry().GetFileSpec(), "The file stayed the same after expression.")
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self.assertTrue (thread.GetStopReason() == lldb.eStopReasonBreakpoint, "We still say we stopped for a breakpoint.")
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self.assertTrue (thread.GetStopReasonDataAtIndex(0) == current_bp[0] and thread.GetStopReasonDataAtIndex(1) == current_bp[1], "And it is the same breakpoint.")
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# Also make sure running the expression didn't change the public stop id
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# but did change if we are asking for expression stops as well.
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stop_id_after_expression = process.GetStopID()
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stop_id_after_including_expressions = process.GetStopID(True)
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self.assertTrue (stop_id_before_expression == stop_id_after_expression, "Expression calling doesn't change stop ID")
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self.assertTrue (stop_id_after_including_expressions > stop_id_before_including_expressions, "Stop ID including expressions increments over expression call.")
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# Do the same thing with an expression that's going to crash, and make sure we are still unchanged.
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frame.EvaluateExpression ("((char *) 0)[0] = 'a'")
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frame = thread.GetFrameAtIndex(0)
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self.assertTrue (current_line == frame.GetLineEntry().GetLine(), "The line stayed the same after expression.")
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self.assertTrue (current_file == frame.GetLineEntry().GetFileSpec(), "The file stayed the same after expression.")
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self.assertTrue (thread.GetStopReason() == lldb.eStopReasonBreakpoint, "We still say we stopped for a breakpoint.")
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self.assertTrue (thread.GetStopReasonDataAtIndex(0) == current_bp[0] and thread.GetStopReasonDataAtIndex(1) == current_bp[1], "And it is the same breakpoint.")
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# Now continue and make sure we just complete the step:
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# Disable all our breakpoints first - sometimes the compiler puts two line table entries in for the
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# breakpoint a "b" and we don't want to hit that.
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for bkpt in breakpoints_to_disable:
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bkpt.SetEnabled(False)
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process.Continue()
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "a")
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self.assertTrue (thread.GetStopReason() == lldb.eStopReasonPlanComplete)
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# And one more time should get us back to main:
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process.Continue()
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "main")
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self.assertTrue (thread.GetStopReason() == lldb.eStopReasonPlanComplete)
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# Now make sure we can call a function, break in the called function, then have "continue" get us back out again:
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frame = thread.GetFrameAtIndex(0)
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frame = thread.GetFrameAtIndex(0)
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current_line = frame.GetLineEntry().GetLine()
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current_file = frame.GetLineEntry().GetFileSpec()
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break_in_b.SetEnabled(True)
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options = lldb.SBExpressionOptions()
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options.SetIgnoreBreakpoints(False)
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options.SetFetchDynamicValue(False)
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options.SetUnwindOnError(False)
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frame.EvaluateExpression ("b (4)", options)
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_b)
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if len(threads) != 1:
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self.fail ("Failed to stop at breakpoint in b when calling b.")
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thread = threads[0]
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# So do a step over here to make sure we can still do that:
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thread.StepOver()
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# See that we are still in b:
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func_name = thread.GetFrameAtIndex(0).GetFunctionName()
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self.assertTrue (func_name == "b", "Should be in 'b', were in %s"%(func_name))
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# Okay, now if we continue, we will finish off our function call and we should end up back in "a" as if nothing had happened:
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process.Continue ()
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self.assertTrue (thread.GetFrameAtIndex(0).GetLineEntry().GetLine() == current_line)
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self.assertTrue (thread.GetFrameAtIndex(0).GetLineEntry().GetFileSpec() == current_file)
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# Now we are going to test step in targeting a function:
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break_in_b.SetEnabled (False)
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break_before_complex_1 = target.BreakpointCreateBySourceRegex ('// Stop here to try step in targeting b.', self.main_source_spec)
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self.assertTrue(break_before_complex_1, VALID_BREAKPOINT)
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break_before_complex_2 = target.BreakpointCreateBySourceRegex ('// Stop here to try step in targeting complex.', self.main_source_spec)
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self.assertTrue(break_before_complex_2, VALID_BREAKPOINT)
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break_before_complex_3 = target.BreakpointCreateBySourceRegex ('// Stop here to step targeting b and hitting breakpoint.', self.main_source_spec)
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self.assertTrue(break_before_complex_3, VALID_BREAKPOINT)
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break_before_complex_4 = target.BreakpointCreateBySourceRegex ('// Stop here to make sure bogus target steps over.', self.main_source_spec)
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self.assertTrue(break_before_complex_4, VALID_BREAKPOINT)
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threads = lldbutil.continue_to_breakpoint(process, break_before_complex_1)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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break_before_complex_1.SetEnabled(False)
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thread.StepInto ("b")
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "b")
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# Now continue out and stop at the next call to complex. This time step all the way into complex:
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threads = lldbutil.continue_to_breakpoint (process, break_before_complex_2)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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break_before_complex_2.SetEnabled(False)
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thread.StepInto ("complex")
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "complex")
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# Now continue out and stop at the next call to complex. This time enable breakpoints in a and c and then step targeting b:
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threads = lldbutil.continue_to_breakpoint (process, break_before_complex_3)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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break_before_complex_3.SetEnabled(False)
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break_at_start_of_a = target.BreakpointCreateByName ('a')
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break_at_start_of_c = target.BreakpointCreateByName ('c')
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thread.StepInto ("b")
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threads = lldbutil.get_stopped_threads(process, lldb.eStopReasonBreakpoint);
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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stop_break_id = thread.GetStopReasonDataAtIndex(0)
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self.assertTrue(stop_break_id == break_at_start_of_a.GetID() or stop_break_id == break_at_start_of_c.GetID())
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break_at_start_of_a.SetEnabled(False)
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break_at_start_of_c.SetEnabled(False)
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process.Continue()
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "b")
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# Now continue out and stop at the next call to complex. This time enable breakpoints in a and c and then step targeting b:
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threads = lldbutil.continue_to_breakpoint (process, break_before_complex_4)
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self.assertTrue (len(threads) == 1)
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thread = threads[0]
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break_before_complex_4.SetEnabled(False)
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thread.StepInto("NoSuchFunction")
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self.assertTrue (thread.GetFrameAtIndex(0).GetFunctionName() == "main")
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