lldb/test/API/lang/c/local_variables/TestLocalVariables.py

   1 """Show local variables and check that they can be inspected.
   2
   3 This test was added after we made a change in clang to normalize
   4 DW_OP_constu(X < 32) to DW_OP_litX which broke the debugger because
   5 it didn't read the value as an unsigned.
   6 """
   7
   8
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class LocalVariablesTestCase(TestBase):
  15     def setUp(self):
  16         # Call super's setUp().
  17         TestBase.setUp(self)
  18         # Find the line number to break inside main().
  19         self.source = "main.c"
  20         self.line = line_number(self.source, "// Set break point at this line.")
  21
  22     def test_c_local_variables(self):
  23         """Test local variable value."""
  24         self.build()
  25
  26         # Create a target by the debugger.
  27         target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
  28         self.assertTrue(target, VALID_TARGET)
  29
  30         # Break inside the main.
  31         lldbutil.run_break_set_by_file_and_line(
  32             self, self.source, self.line, num_expected_locations=1, loc_exact=True
  33         )
  34
  35         # Now launch the process, and do not stop at entry point.
  36         process = target.LaunchSimple(None, None, self.get_process_working_directory())
  37         self.assertTrue(process, PROCESS_IS_VALID)
  38
  39         # The stop reason of the thread should be breakpoint.
  40         self.expect(
  41             "thread list",
  42             STOPPED_DUE_TO_BREAKPOINT,
  43             substrs=["stopped", "stop reason = breakpoint"],
  44         )
  45
  46         # The breakpoint should have a hit count of 1.
  47         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
  48
  49         self.expect(
  50             "frame variable i",
  51             VARIABLES_DISPLAYED_CORRECTLY,
  52             substrs=["(unsigned int) i = 10"],
  53         )