| """Test that lldb functions correctly after the inferior has crashed while in a recursive routine.""" |
| |
| import os, time |
| import unittest2 |
| import lldb, lldbutil |
| from lldbtest import * |
| |
| class CrashingRecursiveInferiorTestCase(TestBase): |
| |
| mydir = os.path.join("functionalities", "inferior-crashing", "recursive-inferior") |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_dsym(self): |
| """Test that lldb reliably catches the inferior crashing (command).""" |
| self.buildDsym() |
| self.recursive_inferior_crashing() |
| |
| @expectedFailureLinux('llvm.org/pr15415', ['gcc', 'clang']) # partial backtrace with -fomit-frame-pointer with tool-chains that support this option |
| def test_recursive_inferior_crashing_dwarf(self): |
| """Test that lldb reliably catches the inferior crashing (command).""" |
| self.buildDwarf() |
| self.recursive_inferior_crashing() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_registers_dsym(self): |
| """Test that lldb reliably reads registers from the inferior after crashing (command).""" |
| self.buildDsym() |
| self.recursive_inferior_crashing_registers() |
| |
| def test_recursive_inferior_crashing_register_dwarf(self): |
| """Test that lldb reliably reads registers from the inferior after crashing (command).""" |
| self.buildDwarf() |
| self.recursive_inferior_crashing_registers() |
| |
| @python_api_test |
| def test_recursive_inferior_crashing_python(self): |
| """Test that lldb reliably catches the inferior crashing (Python API).""" |
| self.buildDefault() |
| self.recursive_inferior_crashing_python() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_expr_dsym(self): |
| """Test that the lldb expression interpreter can read from the inferior after crashing (command).""" |
| self.buildDsym() |
| self.recursive_inferior_crashing_expr() |
| |
| def test_recursive_inferior_crashing_expr_dwarf(self): |
| """Test that the lldb expression interpreter can read from the inferior after crashing (command).""" |
| self.buildDwarf() |
| self.recursive_inferior_crashing_expr() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_step_dsym(self): |
| """Test that lldb functions correctly after stepping through a crash.""" |
| self.buildDsym() |
| self.recursive_inferior_crashing_step() |
| |
| def test_recursive_inferior_crashing_step_dwarf(self): |
| """Test that stepping after a crash behaves correctly.""" |
| self.buildDwarf() |
| self.recursive_inferior_crashing_step() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_step_after_break_dsym(self): |
| """Test that stepping after a crash behaves correctly.""" |
| self.buildDsym() |
| self.recursive_inferior_crashing_step_after_break() |
| |
| def test_recursive_inferior_crashing_step_after_break_dwarf(self): |
| """Test that lldb functions correctly after stepping through a crash.""" |
| self.buildDwarf() |
| self.recursive_inferior_crashing_step_after_break() |
| |
| @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin") |
| def test_recursive_inferior_crashing_expr_step_and_expr_dsym(self): |
| """Test that lldb expressions work before and after stepping after a crash.""" |
| self.buildDsym() |
| self.recursive_inferior_crashing_expr_step_expr() |
| |
| @expectedFailureLinux # due to llvm.org/pr15415 with -fomit-frame-pointer, and pr15989 with ebp/rbp |
| def test_recursive_inferior_crashing_expr_step_and_expr_dwarf(self): |
| """Test that lldb expressions work before and after stepping after a crash.""" |
| self.buildDwarf() |
| 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): |
| if sys.platform.startswith("darwin"): |
| stop_reason = 'stop reason = EXC_BAD_ACCESS' |
| else: |
| stop_reason = 'stop reason = invalid address' |
| |
| # The stop reason of the thread should be a bad access exception. |
| self.expect("thread list", STOPPED_DUE_TO_EXC_BAD_ACCESS, |
| substrs = ['stopped', |
| stop_reason]) |
| |
| return stop_reason |
| |
| 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 = os.path.join(os.getcwd(), "a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| stop_reason = self.check_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 = os.path.join(os.getcwd(), "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, os.getcwd()) |
| |
| 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())) |
| |
| thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonException) |
| if not thread: |
| self.fail("Fail to stop the thread upon bad access exception") |
| |
| if self.TraceOn(): |
| lldbutil.print_stacktrace(thread) |
| |
| def recursive_inferior_crashing_registers(self): |
| """Test that lldb can read registers after crashing.""" |
| exe = os.path.join(os.getcwd(), "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. |
| self.expect("register read eax", |
| substrs = ['eax = 0x']) |
| |
| def recursive_inferior_crashing_expr(self): |
| """Test that the lldb expression interpreter can read symbols after crashing.""" |
| exe = os.path.join(os.getcwd(), "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 = os.path.join(os.getcwd(), "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") |
| stop_reason = 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. |
| self.expect("register read eax", |
| substrs = ['eax = 0x']) |
| |
| # 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_step_after_break(self): |
| """Test that lldb behaves correctly when stepping after a crash.""" |
| exe = os.path.join(os.getcwd(), "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 sys.platform.startswith("darwin"): |
| expected_state = 'stopped' # TODO: Determine why 'next' and 'continue' have no effect after a crash. |
| |
| self.expect("next", |
| substrs = ['Process', expected_state]) |
| |
| self.expect("thread list", error=True, |
| substrs = ['Process must be launched']) |
| |
| def recursive_inferior_crashing_expr_step_expr(self): |
| """Test that lldb expressions work before and after stepping after a crash.""" |
| exe = os.path.join(os.getcwd(), "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() |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
