Dear All,
I find these codes that run OK in IP 0.96 throw exception in IP 1.0.
Here are the codes:
>>> def A(*args):
... print args
>>> def B(*args):
... A(*args)
B(1,2,3)
System.NullReferenceException: Object reference not set to an instance of
an object.
at IronPython.Runtime.Frame.TryGetLocal(String name, Object& ret) in
F:\IronPython-1.0-Beta1\Src\
IronPython\Runtime\Frame.cs:line 67
at IronPython.Runtime.Frame.GetGlobal(String name) in
F:\IronPython-1.0-Beta1\Src\IronPython\Runt
ime\Frame.cs:line 90
at moduleHolder_1.B$f1(Object args)
at moduleHolder_1.B$f1(Object[] )
at IronPython.Runtime.FunctionX.Call(Object[] args) in
F:\IronPython-1.0-Beta1\Src\IronPython\Run
time\Function.cs:line 968
at IronPython.Runtime.FunctionN.Call(Object arg0, Object arg1, Object
arg2) in F:\IronPython-1.0-
Beta1\Src\IronPython\Runtime\Function.cs:line 849
at IronPython.Runtime.Ops.CallWithContext(ICallerContext context, Object
func, Object arg0, Objec
t arg1, Object arg2) in
F:\IronPython-1.0-Beta1\Src\IronPython\Runtime\Ops.cs:line 2055
at input##0(Frame )
at IronPython.Runtime.FrameCodeDelegate.Invoke(Frame frame)
at IronPython.Runtime.FrameCode.Run(Frame frame) in
F:\IronPython-1.0-Beta1\Src\IronPython\Runtim
e\Frame.cs:line 165
at IronPython.Hosting.PythonEngine.DoOneInteractive(Frame topFrame) in
F:\IronPython-1.0-Beta1\Sr
c\IronPython\Hosting\PythonEngine.cs:line 333
at IronPython.Hosting.PythonEngine.RunInteractive() in
F:\IronPython-1.0-Beta1\Src\IronPython\Hos
ting\PythonEngine.cs:line 272
Exception: Object reference not set to an instance of an object.
When I debug this error, I also find the f_locals in Frame.cs is the
key point. When the global function with name B is retrieved, the f_locals
is fine. And the workflow continues, the global function with name A should
be fetched, but this time f_locals is null! I don't know what reset the
f_locals variable, but I guess the Tuple.cs may be the criminal.
Regards,
Michael
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