artulab.com Git - openbsd/blob

   1 """
   2 Test that we properly display the backtrace when a noreturn function happens to
   3 be at the end of the stack.
   4 """
   5
   6
   7
   8 import lldb
   9 from lldbsuite.test.decorators import *
  10 from lldbsuite.test.lldbtest import *
  11 from lldbsuite.test import lldbutil
  12
  13
  14 class TestNoreturnModuleEnd(TestBase):
  15     NO_DEBUG_INFO_TESTCASE = True
  16     mydir = TestBase.compute_mydir(__file__)
  17
  18     def setUp(self):
  19         super(TestNoreturnModuleEnd, self).setUp()
  20         self._initial_platform = lldb.DBG.GetSelectedPlatform()
  21
  22     def tearDown(self):
  23         lldb.DBG.SetSelectedPlatform(self._initial_platform)
  24         super(TestNoreturnModuleEnd, self).tearDown()
  25
  26     def test(self):
  27         target = self.dbg.CreateTarget("test.out")
  28         process = target.LoadCore("test.core")
  29         self.assertTrue(process.IsValid(), PROCESS_IS_VALID)
  30         self.assertEqual(process.GetNumThreads(), 1)
  31
  32         thread = process.GetSelectedThread()
  33         self.assertTrue(thread.IsValid())
  34
  35         backtrace = [
  36             ["func2", 3],
  37             ["func1", 8],
  38             ["_start", 8],
  39         ]
  40         self.assertEqual(thread.GetNumFrames(), len(backtrace))
  41         for i in range(len(backtrace)):
  42             frame = thread.GetFrameAtIndex(i)
  43             self.assertTrue(frame.IsValid())
  44             symbol = frame.GetSymbol()
  45             self.assertTrue(symbol.IsValid())
  46             self.assertEqual(symbol.GetName(), backtrace[i][0])
  47             function_start = symbol.GetStartAddress().GetLoadAddress(target)
  48             self.assertEquals(function_start + backtrace[i][1], frame.GetPC())
  49
  50         self.dbg.DeleteTarget(target)