Am Freitag, 12. September 2014, 18:59:24 schrieb Richard Hipp:
> On Fri, Sep 12, 2014 at 7:23 AM, Benjamin Franksen <
> benjamin.frank...@helmholtz-berlin.de> wrote:
> > I am using the lemon parser generator for a different project. It
> > appears that an attempt to pro-actively avoid a 64-bit problem in fact
> > created one in the first place. I am referring to the following change:
> >
> >
> > http://www3.sqlite.org/cgi/src/fdiff?sbs=1&v1=445f18999b700d83b83a5d9be00c
> > 596546c21052&v2=90f46af31c92b940fec25b491f39409fd95dcdfa
> >
> > which says in its comment: "Fix a typecast problem in lemon that could
> > cause problems on 64-bit machines."
> >
> > One of my users noticed that on Windows 8.1 x64 with Visual Studio 2013
> > the version of lemon I bundle with my project crashed. With a debugger
> > he found that the problem is caused exactly by the line the above patch
> > changes and found that using '(unsigned long)' in the cast solves the
> > problem. I propose to revert this change. I tested this on Linux (32 and
> > 64 Bit).
>
> I think the code is better as it stands.  And I am unable to recreate the
> problem.
>
> Why do you think (unsigned long) is better?

You are right. The crash was caused by the (unsigned long) cast, and the
(char*) cast fixes the problem. Everything is as it should be.

I was just completely confused by stuff being different on different branches
of my project. Sorry for the noise.

Cheers
Ben

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