"XXX undetected error" in python_d.exe
Mark Hammond
mhammond at skippinet.com.au
Fri Dec 14 05:59:10 EST 2001
Courageous wrote:
> How am I supposed to interpret this error when it is printed
> by the Python interpreter?
It generally means that someone has previously set an exception and not
cleared or propagated it.
For example, the following code could cause it:
PyObject *ob = PyObject_GetAttrString(a,"whatever");
if (ob==NULL) {
Py_INCREF(Py_None);
return Py_None;
}
The GetAttrString() call sets an exception, but the function returns an
object. In some cases this could trigger the above message.
These are hard to debug - the message is often not printed as the error
is left pending - it is often quite stale by the time the warning is
printed. The frame location as it is printed can give you a hint though.
Finding it hsa always been pure grunt :(
> This appears to be a feature of newer (2.2?) interpreters in
> debug build only.
I believe debug only, but pre 2.2. I think 2.0 at least, but maybe only
2.1.
Mark.
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