259 lines
8.9 KiB
Python
259 lines
8.9 KiB
Python
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# 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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@skipIf(compiler="clang", compiler_version=["<", "13.0"])
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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(
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self, "objc_exception_throw", launch_info=launch_info
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)
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self.expect(
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"thread list",
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substrs=["stopped", "stop reason = hit Objective-C exception"],
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)
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self.expect(
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"thread exception",
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substrs=[
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"(NSException *) exception = ",
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'"SomeReason"',
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],
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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(
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variables.GetValueAtIndex(0).GetValueType(), lldb.eValueTypeVariableArgument
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)
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lldbutil.run_to_source_breakpoint(
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self,
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"// Set break point at this line.",
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lldb.SBFileSpec("main.mm"),
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launch_info=launch_info,
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)
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self.expect(
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"thread list",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["stopped", "stop reason = breakpoint"],
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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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# 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", substrs=["(NSException *) e1 = ", '"SomeReason"']
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)
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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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"name = ",
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'"ExceptionName"',
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"reason = ",
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'"SomeReason"',
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"userInfo = ",
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"1 key/value pair",
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"reserved = ",
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],
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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(
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userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key"
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)
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self.assertEqual(
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userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value"
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)
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self.expect(
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"frame variable e2", substrs=["(NSException *) e2 = ", '"SomeReason"']
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)
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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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"name = ",
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'"ThrownException"',
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"reason = ",
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'"SomeReason"',
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"userInfo = ",
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"1 key/value pair",
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"reserved = ",
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],
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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(
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e2.GetChildMemberWithName("name").description, "ThrownException"
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)
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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(
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userInfo.GetChildAtIndex(0).GetChildAtIndex(0).description, "some_key"
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)
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self.assertEqual(
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userInfo.GetChildAtIndex(0).GetChildAtIndex(1).description, "some_value"
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)
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reserved = e2.GetChildMemberWithName("reserved").dynamic
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self.assertGreater(reserved.num_children, 0)
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callStackReturnAddresses = [
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reserved.GetChildAtIndex(i).GetChildAtIndex(1)
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for i in range(0, reserved.GetNumChildren())
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if reserved.GetChildAtIndex(i).GetChildAtIndex(0).description
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== "callStackReturnAddresses"
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][0].dynamic
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children = [
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callStackReturnAddresses.GetChildAtIndex(i)
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for i in range(0, callStackReturnAddresses.num_children)
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]
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pcs = [i.unsigned for i in children]
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names = [
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target.ResolveSymbolContextForAddress(
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lldb.SBAddress(pc, target), lldb.eSymbolContextSymbol
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)
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.GetSymbol()
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.name
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for pc in pcs
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]
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for n in ["objc_exception_throw", "foo(int)", "main"]:
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self.assertIn(
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n, names, "%s is in the exception backtrace (%s)" % (n, names)
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)
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@skipIf(compiler="clang", compiler_version=["<", "13.0"])
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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", substrs=["stopped", "stop reason = signal SIGABRT"])
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self.expect(
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"thread exception",
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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",
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"at main.mm:16",
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"a.out`rethrow",
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"at main.mm:27",
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"a.out`main",
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],
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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(
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len([f for f in history_thread.frames if f.GetFunctionName() == n]), 1
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)
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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", substrs=["stopped", "stop reason = signal SIGABRT"])
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self.expect(
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"thread exception",
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substrs=[
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"(MyCustomException *) exception = ",
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"libobjc.A.dylib`objc_exception_throw",
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"a.out`foo",
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"at main.mm:18",
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"a.out`rethrow",
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"at main.mm:27",
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"a.out`main",
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],
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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(
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len([f for f in history_thread.frames if f.GetFunctionName() == n]), 1
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)
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@skipIf(compiler="clang", compiler_version=["<", "13.0"])
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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", 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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