TestInferiorChanged.py revision 431d839a33e9a274e705f7a268a1c9de2ffc2da2 
1"""Test lldb reloads the inferior after it was changed during the session."""
2
3import os, time
4import unittest2
5import lldb
6from lldbtest import *
7import lldbutil
8
9class ChangedInferiorTestCase(TestBase):
10
11    mydir = os.path.join("functionalities", "inferior-changed")
12
13    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
14    def test_inferior_crashing_dsym(self):
15        """Test lldb reloads the inferior after it was changed during the session."""
16        self.buildDsym()
17        self.inferior_crashing()
18        self.cleanup()
19        d = {'C_SOURCES': 'main2.c'}
20        self.buildDsym(dictionary=d)
21        self.setTearDownCleanup(dictionary=d)
22        self.inferior_not_crashing()
23
24    def test_inferior_crashing_dwarf(self):
25        """Test lldb reloads the inferior after it was changed during the session."""
26        self.buildDwarf()
27        self.inferior_crashing()
28        self.cleanup()
29        d = {'C_SOURCES': 'main2.c'}
30        self.buildDwarf(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        exe = os.path.join(os.getcwd(), "a.out")
44        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
45
46        self.runCmd("run", RUN_SUCCEEDED)
47
48        # The stop reason of the thread should be a bad access exception.
49        self.expect("thread list", STOPPED_DUE_TO_EXC_BAD_ACCESS,
50            substrs = ['stopped',
51                       'stop reason = EXC_BAD_ACCESS'])
52
53        # And it should report the correct line number.
54        self.expect("thread backtrace all",
55            substrs = ['stop reason = EXC_BAD_ACCESS',
56                       'main.c:%d' % self.line1])
57
58    def inferior_not_crashing(self):
59        """Test lldb reloads the inferior after it was changed during the session."""
60        self.runCmd("process kill")
61        self.runCmd("run", RUN_SUCCEEDED)
62        self.runCmd("process status")
63
64        if 'EXC_BAD_ACCESS' in self.res.GetOutput():
65            self.fail("Inferior changed, but lldb did not perform a reload")
66
67        # Break inside the main.
68        lldbutil.run_break_set_by_file_and_line (self, "main2.c", self.line2, num_expected_locations=1, loc_exact=True)
69
70        self.runCmd("run", RUN_SUCCEEDED)
71
72        # The stop reason of the thread should be breakpoint.
73        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
74            substrs = ['stopped',
75                       'stop reason = breakpoint'])
76
77        self.runCmd("frame variable int_ptr")
78        self.expect("frame variable *int_ptr",
79            substrs = ['= 7'])
80        self.expect("expression *int_ptr",
81            substrs = ['= 7'])
82
83
84if __name__ == '__main__':
85    import atexit
86    lldb.SBDebugger.Initialize()
87    atexit.register(lambda: lldb.SBDebugger.Terminate())
88    unittest2.main()
89