[Pyrex] [Cython-dev] Segmentation Fault with -O0

[Samuele Kaplun]

In data giovedì 09 agosto 2007, Samuele Kaplun scribacchiaste dette parole:
> In data giovedì 09 agosto 2007, Stefan Behnel scribacchiaste dette parole:
> > Samuele Kaplun wrote:
> > >> When I compile everything without optimization (-O0) it always crashes
> > >> after exiting from __new__.
> > >> I tried to selectively commenting-out the code and I found that the
> > >> incriminated row is:
> > >> 		PyObject_AsReadBuffer(tmp, &buf, &size)
> > >> But I really don't know why.
> > >> The most interesting thing, is that it never segfaults when compiled
> > >> with -02 or -03.
> > >> If checked this with latest Cython & Pyrex and I obtain the same
> > >> behaviour.
> > >
> > > Some additional information: I run the tests with gcc-3.4.6, 4.1.2 and
> > > 4.2.0, with the same behaviour (crash with -O0, -O, no crash with -O2,
> > > -O3), on an amd64 machine and Python 2.5. It never crash on gcc-3.x on
> > > 32bits.
> >
> > How did you declare the function? Did you use Py_ssize_t for the size
> > parameter?
> >
> > Stefan
>
> Dear Stefan
> I used "int" taking it from the Python doc on
> http://docs.python.org/api/abstract-buffer.html
> I will test with Py_ssize_t.
> Best regards,
> 	Samuele

Herm, readingly carefully I see Py_ssize_t!
Let's see, then.
Best regards,
	Samuele

-- 
.O.
..O
OOO