Re: ALIGNMENT/ please reply!!!

[Herve Dutter <hdutter@nospam.com>]

hi!

I can see no alignment issue in what you describe, the SPARC processor
is just not able to handle shorts with odd location.

Cheers.

cris wrote:
> 
> Guys, i really need help!
> 
> i'm reposting my first msg:
> 
> hi!
> 
> how can i tell gcc to compile my programs using strict-alignment for data
> types?
> if i write smth like this:
> 
>     void *full_array = malloc(50);
>     short *short_p = &(( (char*) full_array)[ N ]);
> 
>     printf("%hd\n",*short_p);
> 
> if N is odd, i get a core dump!
> 
> i'm using gcc 2.7.2 on an old sparc2 with SunOs 4.1.3, no way to upgrade the
> os or to get a newer build of gcc.
> 
> i've searched in the doc., i've found -m switches regarding alignment for
> ibm machines, but none for sparc ones!
> 
> i've also seen a SHORT_ALIGNMENT macro to be defined (gcc-info, "You can
> control compilation driver"), but i don't know WHERE to define it!
> 
> please help, reply by email too!
> 
> have a nice day :)