1"""Test that forward declaration of a data structure gets resolved correctly."""
2
3
4
5import lldb
6from lldbsuite.test.lldbtest import *
7from lldbsuite.test.decorators import *
8import lldbsuite.test.lldbutil as lldbutil
9
10
11class ForwardDeclarationTestCase(TestBase):
12
13    def do_test(self, dictionary=None):
14        """Display *bar_ptr when stopped on a function with forward declaration of struct bar."""
15        self.build(dictionary=dictionary)
16        exe = self.getBuildArtifact("a.out")
17        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
18
19        # Break inside the foo function which takes a bar_ptr argument.
20        lldbutil.run_break_set_by_symbol(
21            self, "foo", num_expected_locations=1, sym_exact=True)
22
23        self.runCmd("run", RUN_SUCCEEDED)
24
25        # The stop reason of the thread should be breakpoint.
26        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
27                    substrs=['stopped',
28                             'stop reason = breakpoint'])
29
30        # The breakpoint should have a hit count of 1.
31        lldbutil.check_breakpoint(self, bpno = 1, expected_hit_count = 1)
32
33        # This should display correctly.
34        # Note that the member fields of a = 1 and b = 2 is by design.
35        self.expect(
36            "frame variable --show-types *bar_ptr",
37            VARIABLES_DISPLAYED_CORRECTLY,
38            substrs=[
39                '(bar) *bar_ptr = ',
40                '(int) a = 1',
41                '(int) b = 2'])
42
43        # And so should this.
44        self.expect(
45            "expression --show-types -- *bar_ptr",
46            VARIABLES_DISPLAYED_CORRECTLY,
47            substrs=[
48                '(bar)',
49                '(int) a = 1',
50                '(int) b = 2'])
51
52    def test(self):
53        self.do_test()
54
55    @no_debug_info_test
56    @skipIfDarwin
57    @skipIf(compiler=no_match("clang"))
58    @skipIf(compiler_version=["<", "8.0"])
59    @expectedFailureAll(oslist=["windows"])
60    def test_debug_names(self):
61        """Test that we are able to find complete types when using DWARF v5
62        accelerator tables"""
63        self.do_test(dict(CFLAGS_EXTRAS="-gdwarf-5 -gpubnames"))
64