lldb/test/API/functionalities/location-list-lookup/TestLocationListLookup.py

   1 """Test that lldb picks the correct DWARF location list entry with a return-pc out of bounds."""
   2
   3 import lldb
   4 from lldbsuite.test.decorators import *
   5 from lldbsuite.test.lldbtest import *
   6 from lldbsuite.test import lldbutil
   7
   8
   9 class LocationListLookupTestCase(TestBase):
  10     def launch(self) -> lldb.SBProcess:
  11         exe = self.getBuildArtifact("a.out")
  12         target = self.dbg.CreateTarget(exe)
  13         self.assertTrue(target, VALID_TARGET)
  14         self.dbg.SetAsync(False)
  15
  16         li = lldb.SBLaunchInfo(["a.out"])
  17         error = lldb.SBError()
  18         process = target.Launch(li, error)
  19         self.assertTrue(process.IsValid())
  20         self.assertTrue(process.is_stopped)
  21
  22         return process
  23
  24     def check_local_vars(self, process: lldb.SBProcess, check_expr: bool):
  25         # Find `bar` on the stack, then
  26         # make sure we can read out the local
  27         # variables (with both `frame var` and `expr`)
  28         for f in process.GetSelectedThread().frames:
  29             frame_name = f.GetDisplayFunctionName()
  30             if frame_name is not None and frame_name.startswith("Foo::bar"):
  31                 argv = f.GetValueForVariablePath("argv").GetChildAtIndex(0)
  32                 strm = lldb.SBStream()
  33                 argv.GetDescription(strm)
  34                 self.assertNotEqual(strm.GetData().find("a.out"), -1)
  35
  36                 if check_expr:
  37                     process.GetSelectedThread().SetSelectedFrame(f.idx)
  38                     self.expect_expr("this", result_type="Foo *")
  39
  40     @skipIf(oslist=["linux"], archs=["arm"])
  41     @skipIfDarwin
  42     def test_loclist_frame_var(self):
  43         self.build()
  44         self.check_local_vars(self.launch(), check_expr=False)
  45
  46     @skipIf(dwarf_version=["<", "3"])
  47     @skipIf(compiler="clang", compiler_version=["<", "12.0"])
  48     @skipUnlessDarwin
  49     def test_loclist_expr(self):
  50         self.build()
  51         self.check_local_vars(self.launch(), check_expr=True)