1"""Test lldb reloads the inferior after it was changed during the session."""
2
3
4
5import time
6import lldb
7from lldbsuite.test.decorators import *
8from lldbsuite.test.lldbtest import *
9from lldbsuite.test import configuration
10from lldbsuite.test import lldbutil
11
12
13class ChangedInferiorTestCase(TestBase):
14
15    mydir = TestBase.compute_mydir(__file__)
16
17    @skipIf(hostoslist=["windows"])
18    @no_debug_info_test
19    @skipIfReproducer # VFS is a snapshot.
20    def test_inferior_crashing(self):
21        """Test lldb reloads the inferior after it was changed during the session."""
22        self.build()
23        self.inferior_crashing()
24        self.cleanup()
25        # lldb needs to recognize the inferior has changed. If lldb needs to check the
26        # new module timestamp, make sure it is not the same as the old one, so add a
27        # 1 second delay.
28        time.sleep(1)
29        d = {'C_SOURCES': 'main2.c'}
30        self.build(dictionary=d)
31        self.setTearDownCleanup(dictionary=d)
32        self.inferior_not_crashing()
33
34    def setUp(self):
35        # Call super's setUp().
36        TestBase.setUp(self)
37        # Find the line number of the crash.
38        self.line1 = line_number('main.c', '// Crash here.')
39        self.line2 = line_number('main2.c', '// Not crash here.')
40
41    def inferior_crashing(self):
42        """Inferior crashes upon launching; lldb should catch the event and stop."""
43        self.exe = self.getBuildArtifact("a.out")
44        self.runCmd("file " + self.exe, CURRENT_EXECUTABLE_SET)
45
46        self.runCmd("run", RUN_SUCCEEDED)
47
48        # We should have one crashing thread
49        self.assertEqual(
50            len(lldbutil.get_crashed_threads(self, self.dbg.GetSelectedTarget().GetProcess())),
51            1,
52            STOPPED_DUE_TO_EXC_BAD_ACCESS)
53
54        # And it should report the correct line number.
55        self.expect("thread backtrace all", substrs=['main.c:%d' % self.line1])
56
57    def inferior_not_crashing(self):
58        """Test lldb reloads the inferior after it was changed during the session."""
59        self.runCmd("process kill")
60        self.runCmd("run", RUN_SUCCEEDED)
61        self.runCmd("process status")
62
63        self.assertNotEqual(
64            len(lldbutil.get_crashed_threads(self, self.dbg.GetSelectedTarget().GetProcess())),
65            1,
66            "Inferior changed, but lldb did not perform a reload")
67
68        # Break inside the main.
69        lldbutil.run_break_set_by_file_and_line(
70            self, "main2.c", self.line2, num_expected_locations=1, loc_exact=True)
71
72        self.runCmd("run", RUN_SUCCEEDED)
73
74        # The stop reason of the thread should be breakpoint.
75        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
76                    substrs=['stopped',
77                             'stop reason = breakpoint'])
78
79        self.runCmd("frame variable int_ptr")
80        self.expect("frame variable *int_ptr",
81                    substrs=['= 7'])
82        self.expect("expression *int_ptr",
83                    substrs=['= 7'])
84