1"""
2Test the SB API SBFrame::GuessLanguage.
3"""
4
5
6
7import lldb
8import lldbsuite.test.lldbutil as lldbutil
9from lldbsuite.test.decorators import *
10from lldbsuite.test.lldbtest import *
11
12
13class TestFrameGuessLanguage(TestBase):
14
15    mydir = TestBase.compute_mydir(__file__)
16
17    # If your test case doesn't stress debug info, the
18    # set this to true.  That way it won't be run once for
19    # each debug info format.
20    NO_DEBUG_INFO_TESTCASE = True
21
22    @skipIf(compiler="clang", compiler_version=['<', '10.0'])
23    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr37658")
24    def test_guess_language(self):
25        """Test GuessLanguage for C and C++."""
26        self.build()
27        self.do_test()
28
29    def check_language(self, thread, frame_no, test_lang):
30        frame = thread.frames[frame_no]
31        self.assertTrue(frame.IsValid(), "Frame %d was not valid."%(frame_no))
32        lang = frame.GuessLanguage()
33        self.assertEqual(lang, test_lang)
34
35    def do_test(self):
36        """Test GuessLanguage for C & C++."""
37        exe = self.getBuildArtifact("a.out")
38
39        # Create a target by the debugger.
40        target = self.dbg.CreateTarget(exe)
41        self.assertTrue(target, VALID_TARGET)
42
43        # Now create a breakpoint in main.c at the source matching
44        # "Set a breakpoint here"
45        breakpoint = target.BreakpointCreateBySourceRegex(
46            "Set breakpoint here", lldb.SBFileSpec("somefunc.c"))
47        self.assertTrue(breakpoint and
48                        breakpoint.GetNumLocations() >= 1,
49                        VALID_BREAKPOINT)
50
51        error = lldb.SBError()
52        # This is the launch info.  If you want to launch with arguments or
53        # environment variables, add them using SetArguments or
54        # SetEnvironmentEntries
55
56        launch_info = target.GetLaunchInfo()
57        process = target.Launch(launch_info, error)
58        self.assertTrue(process, PROCESS_IS_VALID)
59
60        # Did we hit our breakpoint?
61        from lldbsuite.test.lldbutil import get_threads_stopped_at_breakpoint
62        threads = get_threads_stopped_at_breakpoint(process, breakpoint)
63        self.assertTrue(
64            len(threads) == 1,
65            "There should be a thread stopped at our breakpoint")
66
67        # The hit count for the breakpoint should be 1.
68        self.assertEquals(breakpoint.GetHitCount(), 1)
69
70        thread = threads[0]
71
72        c_frame_language = lldb.eLanguageTypeC99
73        cxx_frame_language = lldb.eLanguageTypeC_plus_plus_11
74        # gcc emits DW_LANG_C89 even if -std=c99 was specified
75        if "gcc" in self.getCompiler():
76            c_frame_language = lldb.eLanguageTypeC89
77            cxx_frame_language = lldb.eLanguageTypeC_plus_plus
78
79        self.check_language(thread, 0, c_frame_language)
80        self.check_language(thread, 1, cxx_frame_language)
81        self.check_language(thread, 2, lldb.eLanguageTypeC_plus_plus)
82
83
84
85