227 lines
8.4 KiB
Python
227 lines
8.4 KiB
Python
"""Test that lldb steps correctly after the inferior has crashed."""
|
|
|
|
|
|
import lldb
|
|
from lldbsuite.test import lldbutil
|
|
from lldbsuite.test import lldbplatformutil
|
|
from lldbsuite.test.decorators import *
|
|
from lldbsuite.test.lldbtest import *
|
|
|
|
|
|
class CrashingInferiorStepTestCase(TestBase):
|
|
|
|
mydir = TestBase.compute_mydir(__file__)
|
|
|
|
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
|
|
@expectedFailureNetBSD
|
|
def test_inferior_crashing(self):
|
|
"""Test that lldb reliably catches the inferior crashing (command)."""
|
|
self.build()
|
|
self.inferior_crashing()
|
|
|
|
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
|
|
def test_inferior_crashing_register(self):
|
|
"""Test that lldb reliably reads registers from the inferior after crashing (command)."""
|
|
self.build()
|
|
self.inferior_crashing_registers()
|
|
|
|
@add_test_categories(['pyapi'])
|
|
def test_inferior_crashing_python(self):
|
|
"""Test that lldb reliably catches the inferior crashing (Python API)."""
|
|
self.build()
|
|
self.inferior_crashing_python()
|
|
|
|
def test_inferior_crashing_expr(self):
|
|
"""Test that the lldb expression interpreter can read from the inferior after crashing (command)."""
|
|
self.build()
|
|
self.inferior_crashing_expr()
|
|
|
|
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
|
|
def test_inferior_crashing_step(self):
|
|
"""Test that stepping after a crash behaves correctly."""
|
|
self.build()
|
|
self.inferior_crashing_step()
|
|
|
|
@skipIfTargetAndroid() # debuggerd interferes with this test on Android
|
|
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
|
|
def test_inferior_crashing_step_after_break(self):
|
|
"""Test that lldb functions correctly after stepping through a crash."""
|
|
self.build()
|
|
self.inferior_crashing_step_after_break()
|
|
|
|
# Inferior exits after stepping after a segfault. This is working as
|
|
# intended IMHO.
|
|
@skipIf(oslist=["freebsd", "linux", "netbsd"])
|
|
def test_inferior_crashing_expr_step_and_expr(self):
|
|
"""Test that lldb expressions work before and after stepping after a crash."""
|
|
self.build()
|
|
self.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 get_api_stop_reason(self):
|
|
return lldb.eStopReasonException
|
|
|
|
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 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 the correct line number.
|
|
self.expect(
|
|
"thread backtrace all",
|
|
substrs=[stop_reason, 'main.c:%d' % self.line])
|
|
|
|
def 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 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 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 argc", startstr='(int) $0 = 1')
|
|
|
|
self.expect("p hello_world", substrs=['Hello'])
|
|
|
|
def 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 argv[0]", substrs=['a.out'])
|
|
self.expect("p null_ptr", substrs=['= 0x0'])
|
|
|
|
# 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])
|
|
|
|
@expectedFailureNetBSD
|
|
def 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 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 argv[0]", substrs=['a.out'])
|
|
|
|
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 argv[0]", substrs=['a.out'])
|