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, then
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        target = self.createTestTarget()
38
39        # Now create a breakpoint in main.c at the source matching
40        # "Set a breakpoint here"
41        breakpoint = target.BreakpointCreateBySourceRegex(
42            "Set breakpoint here", lldb.SBFileSpec("somefunc.c"))
43        self.assertTrue(breakpoint and
44                        breakpoint.GetNumLocations() >= 1,
45                        VALID_BREAKPOINT)
46
47        error = lldb.SBError()
48        # This is the launch info.  If you want to launch with arguments or
49        # environment variables, add them using SetArguments or
50        # SetEnvironmentEntries
51
52        launch_info = target.GetLaunchInfo()
53        process = target.Launch(launch_info, error)
54        self.assertTrue(process, PROCESS_IS_VALID)
55
56        # Did we hit our breakpoint?
57        from lldbsuite.test.lldbutil import get_threads_stopped_at_breakpoint
58        threads = get_threads_stopped_at_breakpoint(process, breakpoint)
59        self.assertEqual(
60            len(threads), 1,
61            "There should be a thread stopped at our breakpoint")
62
63        # The hit count for the breakpoint should be 1.
64        self.assertEquals(breakpoint.GetHitCount(), 1)
65
66        thread = threads[0]
67
68        c_frame_language = lldb.eLanguageTypeC99
69        cxx_frame_language = lldb.eLanguageTypeC_plus_plus_11
70        # gcc emits DW_LANG_C89 even if -std=c99 was specified
71        if "gcc" in self.getCompiler():
72            c_frame_language = lldb.eLanguageTypeC89
73            cxx_frame_language = lldb.eLanguageTypeC_plus_plus
74
75        self.check_language(thread, 0, c_frame_language)
76        self.check_language(thread, 1, cxx_frame_language)
77        self.check_language(thread, 2, lldb.eLanguageTypeC_plus_plus)
78
79
80
81