| """Test that lldb functions correctly after the inferior has crashed while in a recursive routine.""" |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbplatformutil |
| from lldbsuite.test import lldbutil |
| |
| |
| class CrashingRecursiveInferiorTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing(self): |
| """Test that lldb reliably catches the inferior crashing (command).""" |
| self.build() |
| self.recursive_inferior_crashing() |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing_register(self): |
| """Test that lldb reliably reads registers from the inferior after crashing (command).""" |
| self.build() |
| self.recursive_inferior_crashing_registers() |
| |
| @add_test_categories(['pyapi']) |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing_python(self): |
| """Test that lldb reliably catches the inferior crashing (Python API).""" |
| self.build() |
| self.recursive_inferior_crashing_python() |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing_expr(self): |
| """Test that the lldb expression interpreter can read from the inferior after crashing (command).""" |
| self.build() |
| self.recursive_inferior_crashing_expr() |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing_step(self): |
| """Test that stepping after a crash behaves correctly.""" |
| self.build() |
| self.recursive_inferior_crashing_step() |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| @skipIfTargetAndroid() # debuggerd interferes with this test on Android |
| def test_recursive_inferior_crashing_step_after_break(self): |
| """Test that lldb functions correctly after stepping through a crash.""" |
| self.build() |
| self.recursive_inferior_crashing_step_after_break() |
| |
| # Inferior exits after stepping after a segfault. This is working as |
| # intended IMHO. |
| @skipIfLinux |
| @skipIfFreeBSD |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778") |
| def test_recursive_inferior_crashing_expr_step_and_expr(self): |
| """Test that lldb expressions work before and after stepping after a crash.""" |
| self.build() |
| self.recursive_inferior_crashing_expr_step_expr() |
| |
| def set_breakpoint(self, line): |
| lldbutil.run_break_set_by_file_and_line( |
| self, "main.c", line, num_expected_locations=1, loc_exact=True) |
| |
| def check_stop_reason(self): |
| # We should have one crashing thread |
| self.assertEqual( |
| len(lldbutil.get_crashed_threads(self, self.dbg.GetSelectedTarget().GetProcess())), |
| 1, |
| STOPPED_DUE_TO_EXC_BAD_ACCESS) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line number of the crash. |
| self.line = line_number('main.c', '// Crash here.') |
| |
| def recursive_inferior_crashing(self): |
| """Inferior crashes upon launching; lldb should catch the event and stop.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The exact stop reason depends on the platform |
| if self.platformIsDarwin(): |
| stop_reason = 'stop reason = EXC_BAD_ACCESS' |
| elif self.getPlatform() == "linux" or self.getPlatform() == "freebsd": |
| stop_reason = 'stop reason = signal SIGSEGV' |
| else: |
| stop_reason = 'stop reason = invalid address' |
| self.expect("thread list", STOPPED_DUE_TO_EXC_BAD_ACCESS, |
| substrs=['stopped', |
| stop_reason]) |
| |
| # And it should report a backtrace that includes main and the crash |
| # site. |
| self.expect( |
| "thread backtrace all", |
| substrs=[ |
| stop_reason, |
| 'main', |
| 'argc', |
| 'argv', |
| 'recursive_function']) |
| |
| # And it should report the correct line number. |
| self.expect("thread backtrace all", |
| substrs=[stop_reason, |
| 'main.c:%d' % self.line]) |
| |
| def recursive_inferior_crashing_python(self): |
| """Inferior crashes upon launching; lldb should catch the event and stop.""" |
| exe = self.getBuildArtifact("a.out") |
| |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Now launch the process, and do not stop at entry point. |
| # Both argv and envp are null. |
| process = target.LaunchSimple( |
| None, None, self.get_process_working_directory()) |
| |
| if process.GetState() != lldb.eStateStopped: |
| self.fail("Process should be in the 'stopped' state, " |
| "instead the actual state is: '%s'" % |
| lldbutil.state_type_to_str(process.GetState())) |
| |
| threads = lldbutil.get_crashed_threads(self, process) |
| self.assertEqual( |
| len(threads), |
| 1, |
| "Failed to stop the thread upon bad access exception") |
| |
| if self.TraceOn(): |
| lldbutil.print_stacktrace(threads[0]) |
| |
| def recursive_inferior_crashing_registers(self): |
| """Test that lldb can read registers after crashing.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.check_stop_reason() |
| |
| # lldb should be able to read from registers from the inferior after |
| # crashing. |
| lldbplatformutil.check_first_register_readable(self) |
| |
| def recursive_inferior_crashing_expr(self): |
| """Test that the lldb expression interpreter can read symbols after crashing.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.check_stop_reason() |
| |
| # The lldb expression interpreter should be able to read from addresses |
| # of the inferior after a crash. |
| self.expect("p i", |
| startstr='(int) $0 =') |
| |
| def recursive_inferior_crashing_step(self): |
| """Test that lldb functions correctly after stepping through a crash.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.set_breakpoint(self.line) |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs=['main.c:%d' % self.line, |
| 'stop reason = breakpoint']) |
| |
| self.runCmd("next") |
| self.check_stop_reason() |
| |
| # The lldb expression interpreter should be able to read from addresses |
| # of the inferior after a crash. |
| self.expect("p i", |
| substrs=['(int) $0 =']) |
| |
| # lldb should be able to read from registers from the inferior after |
| # crashing. |
| lldbplatformutil.check_first_register_readable(self) |
| |
| # And it should report the correct line number. |
| self.expect("thread backtrace all", |
| substrs=['main.c:%d' % self.line]) |
| |
| def recursive_inferior_crashing_step_after_break(self): |
| """Test that lldb behaves correctly when stepping after a crash.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.check_stop_reason() |
| |
| expected_state = 'exited' # Provide the exit code. |
| if self.platformIsDarwin(): |
| # TODO: Determine why 'next' and 'continue' have no effect after a |
| # crash. |
| expected_state = 'stopped' |
| |
| self.expect("next", |
| substrs=['Process', expected_state]) |
| |
| if expected_state == 'exited': |
| self.expect( |
| "thread list", |
| error=True, |
| substrs=['Process must be launched']) |
| else: |
| self.check_stop_reason() |
| |
| def recursive_inferior_crashing_expr_step_expr(self): |
| """Test that lldb expressions work before and after stepping after a crash.""" |
| exe = self.getBuildArtifact("a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| self.check_stop_reason() |
| |
| # The lldb expression interpreter should be able to read from addresses |
| # of the inferior after a crash. |
| self.expect("p null", |
| startstr='(char *) $0 = 0x0') |
| |
| self.runCmd("next") |
| |
| # The lldb expression interpreter should be able to read from addresses |
| # of the inferior after a step. |
| self.expect("p null", |
| startstr='(char *) $1 = 0x0') |
| |
| self.check_stop_reason() |
