[pypy-dev] help(1) OverflowError

[holger krekel]

On Fri, Apr 01, 2005 at 10:48 +0100, Armin Rigo wrote:
> On Fri, Apr 01, 2005 at 03:56:34PM +0900, Sanghyeon Seo wrote:
> >   File "/home/tinuviel/pypy/dist/lib-python-2.3.4/sre_compile.py",
> > line 488 in compile
> >         groupindex, indexgroup
> > OverflowError: long int too large to convert to int
> 
> Actually, if you have a very fast machine, debugging with pdb in py.py works
> fine.  It's related to Michael Chermside's module/_sre_pypy/ check-in.  The
> bug is that _sre.compile() should accept as 3rd argument a list of unsigned
> integers, but in the current implementation expects a list of signed integers
> -- hence the OverflowError.
> 
> Help!  What is the proper way to unwrap an unsigned integer?

Hum, nobody seems to be able to answer this at the moment. 
It probably relates to the fact that our usage of integers at 
interpreter-level in general is fuzzy.  Or do we have a concise 
explicit definition for their usage? 

Anyway, apparently Samuele and me re-patched the trunk to not use 
Michael Chermside's _sre_pypy implementation for the moment because 
of this issue.  You can get back the previous behaviour (with the 
help(1) problem) by uncommenting in baseobjspace.py the 
line starting with ... self.setbuiltinmodule("_sre"
at least on amd64 (which fails differently from a 32bit
machine, sigh). 

    holger