On 03/29/2014 01:47 PM, Nick Coghlan wrote:
On 30 March 2014 03:05, Ethan Furman <et...@stoneleaf.us> wrote:
This bit of code won't even finish compiling. I am not sure if my
understanding of references (and how these functions create/consume them) or
my understanding of when and where to call PyErr_Fetch|Restore or
PyException_SetContext is at fault, but I would greatly appreciate somebody
correcting my understanding. :)
I had to figure this out for the codec exception chaining in Python
3.4, and the main piece that appears to be missing from your code is
an appropriate call to PyErr_NormalizeException(). (The interpreter
tries to avoid actually instantiating exceptions if it can, with the
consequence that explicit normalisation is often needed before
non-trivial operations on the current exception)h
One of the many gyrations I tried before asking for help involved calling PyErr_NormalizeException, but it didn't seem
to solve the problem so I removed it before posting the minimum that I thought should work.
This is the code that does the heavy lifting for the codec exception
chaining in Python 3.4:
http://hg.python.org/cpython/file/36492f927a40/Objects/exceptions.c#l2644
http://hg.python.org/cpython/file/36492f927a40/Objects/exceptions.c#l2764
Thanks, I'll check those out.
--
~Ethan~
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