88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
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"""
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Test lldb exception breakpoint command for CPP.
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"""
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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 CPPBreakpointTestCase(TestBase):
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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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self.source = "exceptions.cpp"
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self.catch_line = line_number(
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self.source, "// This is the line you should stop at for catch"
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)
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr24538, clang-cl does not support throw or catch",
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)
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def test(self):
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"""Test lldb exception breakpoint command for CPP."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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# Create a target from the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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exception_bkpt = target.BreakpointCreateForException(
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lldb.eLanguageTypeC_plus_plus, True, True
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)
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self.assertTrue(exception_bkpt, "Made an exception breakpoint")
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# Now run, and make sure we hit our breakpoint:
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process = target.LaunchSimple(None, None, self.get_process_working_directory())
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self.assertTrue(process, "Got a valid process")
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stopped_threads = []
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stopped_threads = lldbutil.get_threads_stopped_at_breakpoint(
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process, exception_bkpt
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)
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self.assertEqual(
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len(stopped_threads), 1, "Stopped at our exception breakpoint."
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)
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thread = stopped_threads[0]
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# Make sure our throw function is still above us on the stack:
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frame_functions = lldbutil.get_function_names(thread)
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self.assertEqual(
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frame_functions.count("throws_exception_on_even(int)"),
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1,
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"Our throw function is still on the stack.",
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)
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# Okay we hit our exception throw breakpoint, now make sure we get our catch breakpoint.
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# One potential complication is that we might hit a couple of the exception breakpoints in getting out of the throw.
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# so loop till we don't see the throws function on the stack. We should stop one more time for our exception breakpoint
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# and that should be the catch...
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while frame_functions.count("throws_exception_on_even(int)") == 1:
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stopped_threads = lldbutil.continue_to_breakpoint(process, exception_bkpt)
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self.assertEquals(len(stopped_threads), 1)
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thread = stopped_threads[0]
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frame_functions = lldbutil.get_function_names(thread)
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self.assertEqual(
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frame_functions.count("throws_exception_on_even(int)"),
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0,
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"At catch our throw function is off the stack",
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)
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self.assertEqual(
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frame_functions.count("intervening_function(int)"),
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0,
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"At catch our intervening function is off the stack",
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)
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self.assertEqual(
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frame_functions.count("catches_exception(int)"),
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1,
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"At catch our catch function is on the stack",
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)
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