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