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