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from __future__ import print_function
import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
from gdbclientutils import *
class TestRestartBug(GDBRemoteTestBase):
@expectedFailureAll(bugnumber="llvm.org/pr24530")
@skipIfReproducer # FIXME: Unexpected packet during (passive) replay
def test(self):
"""
Test auto-continue behavior when a process is interrupted to deliver
an "asynchronous" packet. This simulates the situation when a process
stops on its own just as lldb client is about to interrupt it. The
client should not auto-continue in this case, unless the user has
explicitly requested that we ignore signals of this type.
"""
class MyResponder(MockGDBServerResponder):
continueCount = 0
def setBreakpoint(self, packet):
return "OK"
def interrupt(self):
# Simulate process stopping due to a raise(SIGINT) just as lldb
# is about to interrupt it.
return "T02reason:signal"
def cont(self):
self.continueCount += 1
if self.continueCount == 1:
# No response, wait for the client to interrupt us.
return None
return "W00" # Exit
self.server.responder = MyResponder()
target = self.createTarget("a.yaml")
process = self.connect(target)
self.dbg.SetAsync(True)
process.Continue()
# resume the process and immediately try to set another breakpoint. When using the remote
# stub, this will trigger a request to stop the process. Make sure we
# do not lose this signal.
bkpt = target.BreakpointCreateByAddress(0x1234)
self.assertTrue(bkpt.IsValid())
self.assertEqual(bkpt.GetNumLocations(), 1)
event = lldb.SBEvent()
while self.dbg.GetListener().WaitForEvent(2, event):
if self.TraceOn():
print("Process changing state to:",
self.dbg.StateAsCString(process.GetStateFromEvent(event)))
if process.GetStateFromEvent(event) == lldb.eStateExited:
break
# We should get only one continue packet as the client should not
# auto-continue after setting the breakpoint.
self.assertEqual(self.server.responder.continueCount, 1)
# And the process should end up in the stopped state.
self.assertEqual(process.GetState(), lldb.eStateStopped)
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