Re: int problems on amd64

[Roland Smith <rsmith xs4all nl>]

On Tue, Mar 29, 2005 at 05:28:35PM +0200, Fabio Rotondo wrote:
> Roland Smith wrote:
>
> > I'm using GTK+ on FreeBSD 5.3 amd64 without problems. Any program
> > casting int to void* is b0rken.
>
> you are perfectly right, but suppose you have to write a qsort callback:
>
> void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const
> void *, const void *));
>
> suppose the "const void *" is actually an int value. By downcasting it
> to int, gcc gives you a warning.

You could try using the 'mode' __attribute__ on the integers?

> > I don't think using setjmp and longjmp on GTK+ is such a good idea. 
>
> longjmp()  and  setjmp()  are  useful  for  dealing  with  errors  and
> interrupts encountered in a low-level subroutine of a program.
> We have implemented an exception-like environment in standard C so we
> need them.

At least don't use them in signal handlers. See:
http://www.mail-archive.com/gtk-list gnome org/msg04340.html

Roland
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