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