1import lldb 2from lldbsuite.test.lldbtest import * 3from lldbsuite.test.decorators import * 4from lldbsuite.test.gdbclientutils import * 5from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase 6 7 8class TestRestartBug(GDBRemoteTestBase): 9 @expectedFailureAll(bugnumber="llvm.org/pr24530") 10 def test(self): 11 """ 12 Test auto-continue behavior when a process is interrupted to deliver 13 an "asynchronous" packet. This simulates the situation when a process 14 stops on its own just as lldb client is about to interrupt it. The 15 client should not auto-continue in this case, unless the user has 16 explicitly requested that we ignore signals of this type. 17 """ 18 19 class MyResponder(MockGDBServerResponder): 20 continueCount = 0 21 22 def setBreakpoint(self, packet): 23 return "OK" 24 25 def interrupt(self): 26 # Simulate process stopping due to a raise(SIGINT) just as lldb 27 # is about to interrupt it. 28 return "T02reason:signal" 29 30 def cont(self): 31 self.continueCount += 1 32 if self.continueCount == 1: 33 # No response, wait for the client to interrupt us. 34 return None 35 return "W00" # Exit 36 37 self.server.responder = MyResponder() 38 target = self.createTarget("a.yaml") 39 process = self.connect(target) 40 self.dbg.SetAsync(True) 41 process.Continue() 42 43 # resume the process and immediately try to set another breakpoint. When using the remote 44 # stub, this will trigger a request to stop the process. Make sure we 45 # do not lose this signal. 46 bkpt = target.BreakpointCreateByAddress(0x1234) 47 self.assertTrue(bkpt.IsValid()) 48 self.assertEqual(bkpt.GetNumLocations(), 1) 49 50 event = lldb.SBEvent() 51 while self.dbg.GetListener().WaitForEvent(2, event): 52 if self.TraceOn(): 53 print( 54 "Process changing state to:", 55 self.dbg.StateAsCString(process.GetStateFromEvent(event)), 56 ) 57 if process.GetStateFromEvent(event) == lldb.eStateExited: 58 break 59 60 # We should get only one continue packet as the client should not 61 # auto-continue after setting the breakpoint. 62 self.assertEqual(self.server.responder.continueCount, 1) 63 # And the process should end up in the stopped state. 64 self.assertState(process.GetState(), lldb.eStateStopped) 65