llvm/lldb/test/API/functionalities/signal/handle-segv/TestHandleSegv.py

"""Test that we can debug inferiors that handle SIGSEGV by themselves"""


import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


class HandleSegvTestCase(TestBase):
    @skipIfWindows  # signals do not exist on Windows
    @skipIfDarwin
    @expectedFailureNetBSD
    def test_inferior_handle_sigsegv(self):
        self.build()
        exe = self.getBuildArtifact("a.out")

        # Create a target by the debugger.
        target = self.dbg.CreateTarget(exe)
        self.assertTrue(target, VALID_TARGET)

        # launch
        process = target.LaunchSimple(None, None, self.get_process_working_directory())
        self.assertTrue(process, PROCESS_IS_VALID)
        self.assertState(process.GetState(), lldb.eStateStopped)
        signo = process.GetUnixSignals().GetSignalNumberFromName("SIGSEGV")

        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
        self.assertTrue(
            thread and thread.IsValid(), "Thread should be stopped due to a signal"
        )
        self.assertGreaterEqual(
            thread.GetStopReasonDataCount(), 1, "There was data in the event."
        )
        self.assertEqual(
            thread.GetStopReasonDataAtIndex(0), signo, "The stop signal was SIGSEGV"
        )

        # Continue until we exit.
        process.Continue()
        self.assertState(process.GetState(), lldb.eStateExited)
        self.assertEqual(process.GetExitStatus(), 0)