205 lines
8.2 KiB
Python
205 lines
8.2 KiB
Python
# encoding: utf-8
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"""
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Test lldb Obj-C exception support.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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class ObjCExceptionsTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def test_objc_exceptions_at_throw(self):
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self.build()
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target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
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self.assertTrue(target, VALID_TARGET)
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launch_info = lldb.SBLaunchInfo(["a.out", "0"])
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launch_info.SetLaunchFlags(lldb.eLaunchFlagInheritTCCFromParent)
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lldbutil.run_to_name_breakpoint(self, "objc_exception_throw", launch_info=launch_info)
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self.expect("thread list",
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substrs=['stopped', 'stop reason = hit Objective-C exception'])
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self.expect('thread exception', substrs=[
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'(NSException *) exception = ',
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'"SomeReason"',
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])
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target = self.dbg.GetSelectedTarget()
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thread = target.GetProcess().GetSelectedThread()
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frame = thread.GetSelectedFrame()
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opts = lldb.SBVariablesOptions()
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opts.SetIncludeRecognizedArguments(True)
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variables = frame.GetVariables(opts)
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self.assertEqual(variables.GetSize(), 1)
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self.assertEqual(variables.GetValueAtIndex(0).name, "exception")
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self.assertEqual(variables.GetValueAtIndex(0).GetValueType(), lldb.eValueTypeVariableArgument)
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lldbutil.run_to_source_breakpoint(self, "// Set break point at this line.", lldb.SBFileSpec("main.mm"), launch_info=launch_info)
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped', 'stop reason = breakpoint'])
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target = self.dbg.GetSelectedTarget()
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thread = target.GetProcess().GetSelectedThread()
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frame = thread.GetSelectedFrame()
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# No exception being currently thrown/caught at this point
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self.assertFalse(thread.GetCurrentException().IsValid())
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self.assertFalse(thread.GetCurrentExceptionBacktrace().IsValid())
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self.expect(
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'frame variable e1',
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substrs=[
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'(NSException *) e1 = ',
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'"SomeReason"'
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])
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self.expect(
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'frame variable --dynamic-type no-run-target *e1',
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substrs=[
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'(NSException) *e1 = ',
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'name = ', '"ExceptionName"',
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'reason = ', '"SomeReason"',
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'userInfo = ', '1 key/value pair',
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'reserved = ', 'nil',
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])
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e1 = frame.FindVariable("e1")
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self.assertTrue(e1)
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self.assertEqual(e1.type.name, "NSException *")
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self.assertEqual(e1.GetSummary(), '"SomeReason"')
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self.assertEqual(e1.GetChildMemberWithName("name").description, "ExceptionName")
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self.assertEqual(e1.GetChildMemberWithName("reason").description, "SomeReason")
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userInfo = e1.GetChildMemberWithName("userInfo").dynamic
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self.assertEqual(userInfo.summary, "1 key/value pair")
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self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key")
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self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value")
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self.assertEqual(e1.GetChildMemberWithName("reserved").description, "<nil>")
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self.expect(
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'frame variable e2',
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substrs=[
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'(NSException *) e2 = ',
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'"SomeReason"'
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])
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self.expect(
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'frame variable --dynamic-type no-run-target *e2',
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substrs=[
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'(NSException) *e2 = ',
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'name = ', '"ThrownException"',
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'reason = ', '"SomeReason"',
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'userInfo = ', '1 key/value pair',
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'reserved = ',
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])
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e2 = frame.FindVariable("e2")
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self.assertTrue(e2)
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self.assertEqual(e2.type.name, "NSException *")
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self.assertEqual(e2.GetSummary(), '"SomeReason"')
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self.assertEqual(e2.GetChildMemberWithName("name").description, "ThrownException")
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self.assertEqual(e2.GetChildMemberWithName("reason").description, "SomeReason")
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userInfo = e2.GetChildMemberWithName("userInfo").dynamic
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self.assertEqual(userInfo.summary, "1 key/value pair")
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self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key")
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self.assertEqual(userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value")
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reserved = e2.GetChildMemberWithName("reserved").dynamic
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self.assertGreater(reserved.num_children, 0)
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callStackReturnAddresses = [reserved.GetChildAtIndex(i).GetChildAtIndex(1) for i in range(0, reserved.GetNumChildren())
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if reserved.GetChildAtIndex(i).GetChildAtIndex(0).description == "callStackReturnAddresses"][0].dynamic
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children = [callStackReturnAddresses.GetChildAtIndex(i) for i in range(0, callStackReturnAddresses.num_children)]
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pcs = [i.unsigned for i in children]
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names = [target.ResolveSymbolContextForAddress(lldb.SBAddress(pc, target), lldb.eSymbolContextSymbol).GetSymbol().name for pc in pcs]
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for n in ["objc_exception_throw", "foo(int)", "main"]:
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self.assertTrue(n in names, "%s is in the exception backtrace (%s)" % (n, names))
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def test_objc_exceptions_at_abort(self):
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self.build()
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target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
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self.assertTrue(target, VALID_TARGET)
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self.runCmd("run 0")
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# We should be stopped at pthread_kill because of an unhandled exception
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self.expect("thread list",
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substrs=['stopped', 'stop reason = signal SIGABRT'])
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self.expect('thread exception', substrs=[
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'(NSException *) exception = ',
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'"SomeReason"',
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'libobjc.A.dylib`objc_exception_throw',
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'a.out`foo', 'at main.mm:16',
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'a.out`rethrow', 'at main.mm:27',
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'a.out`main',
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])
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process = self.dbg.GetSelectedTarget().process
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thread = process.GetSelectedThread()
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# There is an exception being currently processed at this point
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self.assertTrue(thread.GetCurrentException().IsValid())
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self.assertTrue(thread.GetCurrentExceptionBacktrace().IsValid())
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history_thread = thread.GetCurrentExceptionBacktrace()
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self.assertGreaterEqual(history_thread.num_frames, 4)
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for n in ["objc_exception_throw", "foo(int)", "rethrow(int)", "main"]:
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self.assertEqual(len([f for f in history_thread.frames if f.GetFunctionName() == n]), 1)
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self.runCmd("kill")
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self.runCmd("run 1")
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# We should be stopped at pthread_kill because of an unhandled exception
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self.expect("thread list",
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substrs=['stopped', 'stop reason = signal SIGABRT'])
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self.expect('thread exception', substrs=[
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'(MyCustomException *) exception = ',
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'libobjc.A.dylib`objc_exception_throw',
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'a.out`foo', 'at main.mm:18',
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'a.out`rethrow', 'at main.mm:27',
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'a.out`main',
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])
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process = self.dbg.GetSelectedTarget().process
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thread = process.GetSelectedThread()
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history_thread = thread.GetCurrentExceptionBacktrace()
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self.assertGreaterEqual(history_thread.num_frames, 4)
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for n in ["objc_exception_throw", "foo(int)", "rethrow(int)", "main"]:
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self.assertEqual(len([f for f in history_thread.frames if f.GetFunctionName() == n]), 1)
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def test_cxx_exceptions_at_abort(self):
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self.build()
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target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
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self.assertTrue(target, VALID_TARGET)
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self.runCmd("run 2")
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# We should be stopped at pthread_kill because of an unhandled exception
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self.expect("thread list",
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substrs=['stopped', 'stop reason = signal SIGABRT'])
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self.expect('thread exception', substrs=['exception ='])
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process = self.dbg.GetSelectedTarget().process
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thread = process.GetSelectedThread()
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self.assertTrue(thread.GetCurrentException().IsValid())
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# C++ exception backtraces are not exposed in the API (yet).
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self.assertFalse(thread.GetCurrentExceptionBacktrace().IsValid())
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