packages/Python/lldbsuite/test/functionalities/signal/handle-segv/TestHandleSegv.py

   1 """Test that we can debug inferiors that handle SIGSEGV by themselves"""
   2
   3 from __future__ import print_function
   4
   5
   6 import os
   7 import re
   8
   9 import lldb
  10 from lldbsuite.test.decorators import *
  11 from lldbsuite.test.lldbtest import *
  12 from lldbsuite.test import lldbutil
  13
  14
  15 class HandleSegvTestCase(TestBase):
  16
  17     mydir = TestBase.compute_mydir(__file__)
  18
  19     @skipIfWindows  # signals do not exist on Windows
  20     @skipIfDarwin
  21     @expectedFailureAll(
  22         oslist=['freebsd'],
  23         bugnumber="llvm.org/pr23699 SIGSEGV is reported as exception, not signal")
  24     def test_inferior_handle_sigsegv(self):
  25         self.build()
  26         exe = os.path.join(os.getcwd(), "a.out")
  27
  28         # Create a target by the debugger.
  29         target = self.dbg.CreateTarget(exe)
  30         self.assertTrue(target, VALID_TARGET)
  31
  32         # launch
  33         process = target.LaunchSimple(
  34             None, None, self.get_process_working_directory())
  35         self.assertTrue(process, PROCESS_IS_VALID)
  36         self.assertEqual(process.GetState(), lldb.eStateStopped)
  37         signo = process.GetUnixSignals().GetSignalNumberFromName("SIGSEGV")
  38
  39         thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
  40         self.assertTrue(
  41             thread and thread.IsValid(),
  42             "Thread should be stopped due to a signal")
  43         self.assertTrue(
  44             thread.GetStopReasonDataCount() >= 1,
  45             "There was data in the event.")
  46         self.assertEqual(thread.GetStopReasonDataAtIndex(0),
  47                          signo, "The stop signal was SIGSEGV")
  48
  49         # Continue until we exit.
  50         process.Continue()
  51         self.assertEqual(process.GetState(), lldb.eStateExited)
  52         self.assertEqual(process.GetExitStatus(), 0)