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"""
This tests that we do not lose control of the inferior, while doing an instruction-level step
over a thread creation instruction.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class CreateDuringInstructionStepTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
NO_DEBUG_INFO_TESTCASE = True
@skipUnlessPlatform(['linux'])
@expectedFailureAndroid('llvm.org/pr24737', archs=['arm'])
@skipIf(oslist=["linux"], archs=["arm", "aarch64"], bugnumber="llvm.org/pr24737")
def test_step_inst(self):
self.build(dictionary=self.getBuildFlags())
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target and target.IsValid(), "Target is valid")
# This should create a breakpoint in the stepping thread.
breakpoint = target.BreakpointCreateByName("main")
self.assertTrue(
breakpoint and breakpoint.IsValid(),
"Breakpoint is valid")
# Run the program.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
# The stop reason of the thread should be breakpoint.
self.assertEqual(
process.GetState(),
lldb.eStateStopped,
PROCESS_STOPPED)
threads = lldbutil.get_threads_stopped_at_breakpoint(
process, breakpoint)
self.assertEqual(len(threads), 1, STOPPED_DUE_TO_BREAKPOINT)
thread = threads[0]
self.assertTrue(thread and thread.IsValid(), "Thread is valid")
# Make sure we see only one threads
self.assertEqual(
process.GetNumThreads(),
1,
'Number of expected threads and actual threads do not match.')
# Keep stepping until we see the thread creation
while process.GetNumThreads() < 2:
thread.StepInstruction(False)
self.assertEqual(
process.GetState(),
lldb.eStateStopped,
PROCESS_STOPPED)
self.assertEqual(
thread.GetStopReason(),
lldb.eStopReasonPlanComplete,
"Step operation succeeded")
if self.TraceOn():
self.runCmd("disassemble --pc")
if self.TraceOn():
self.runCmd("thread list")
# We have successfully caught thread creation. Now just run to
# completion
process.Continue()
# At this point, the inferior process should have exited.
self.assertEqual(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
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