1"""
2Test that ValueObjectPrinter does not cause an infinite loop when a reference to a struct that contains a pointer to itself is printed.
3"""
4
5
6
7import lldb
8from lldbsuite.test.lldbtest import *
9import lldbsuite.test.lldbutil as lldbutil
10
11
12class DataFormatterRefPtrRecursionTestCase(TestBase):
13
14    def setUp(self):
15        # Call super's setUp().
16        TestBase.setUp(self)
17        # Find the line number to break at.
18        self.line = line_number('main.cpp', '// Set break point at this line.')
19
20    def test_with_run_command(self):
21        """Test that ValueObjectPrinter does not cause an infinite loop when a reference to a struct that contains a pointer to itself is printed."""
22        self.build()
23        self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
24
25        lldbutil.run_break_set_by_file_and_line(
26            self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
27
28        self.runCmd("run", RUN_SUCCEEDED)
29
30        # The stop reason of the thread should be breakpoint.
31        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
32                    substrs=['stopped',
33                             'stop reason = breakpoint'])
34
35        self.expect("frame variable foo", substrs=[])
36        self.expect("frame variable foo --ptr-depth=1", substrs=['ID = 1'])
37        self.expect("frame variable foo --ptr-depth=2", substrs=['ID = 1'])
38        self.expect("frame variable foo --ptr-depth=3", substrs=['ID = 1'])
39