1"""
2This tests that we do not lose control of the inferior, while doing an instruction-level step
3over a thread creation instruction.
4"""
5
6
7import lldb
8from lldbsuite.test.decorators import *
9from lldbsuite.test.lldbtest import *
10from lldbsuite.test import lldbutil
11
12
13class CreateDuringInstructionStepTestCase(TestBase):
14    NO_DEBUG_INFO_TESTCASE = True
15
16    @skipUnlessPlatform(["linux"])
17    @expectedFailureAndroid("llvm.org/pr24737", archs=["arm"])
18    @skipIf(oslist=["linux"], archs=["arm", "aarch64"], bugnumber="llvm.org/pr24737")
19    def test_step_inst(self):
20        self.build()
21        exe = self.getBuildArtifact("a.out")
22        target = self.dbg.CreateTarget(exe)
23        self.assertTrue(target and target.IsValid(), "Target is valid")
24
25        # This should create a breakpoint in the stepping thread.
26        breakpoint = target.BreakpointCreateByName("main")
27        self.assertTrue(breakpoint and breakpoint.IsValid(), "Breakpoint is valid")
28
29        # Run the program.
30        process = target.LaunchSimple(None, None, self.get_process_working_directory())
31        self.assertTrue(process and process.IsValid(), PROCESS_IS_VALID)
32
33        # The stop reason of the thread should be breakpoint.
34        self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
35
36        threads = lldbutil.get_threads_stopped_at_breakpoint(process, breakpoint)
37        self.assertEqual(len(threads), 1, STOPPED_DUE_TO_BREAKPOINT)
38
39        thread = threads[0]
40        self.assertTrue(thread and thread.IsValid(), "Thread is valid")
41
42        # Make sure we see only one threads
43        self.assertEqual(
44            process.GetNumThreads(),
45            1,
46            "Number of expected threads and actual threads do not match.",
47        )
48
49        # Keep stepping until we see the thread creation
50        while process.GetNumThreads() < 2:
51            thread.StepInstruction(False)
52            self.assertEqual(process.GetState(), lldb.eStateStopped, PROCESS_STOPPED)
53            self.assertEqual(
54                thread.GetStopReason(),
55                lldb.eStopReasonPlanComplete,
56                "Step operation succeeded",
57            )
58            if self.TraceOn():
59                self.runCmd("disassemble --pc")
60
61        if self.TraceOn():
62            self.runCmd("thread list")
63
64        # We have successfully caught thread creation. Now just run to
65        # completion
66        process.Continue()
67
68        # At this point, the inferior process should have exited.
69        self.assertState(process.GetState(), lldb.eStateExited, PROCESS_EXITED)
70