Avoid gcc warning on sparc solaris 9

[Pedro Alves]

Ulrich Weigand wrote:
> Pedro Alves wrote:
>
> > Building HEAD on a native gdb on sparc solaris 9 with gcc 3.4.6 stops due to:
> >
> > ../../src/gdb/sol-thread.c: In function `sol_thread_fetch_registers':
> > ../../src/gdb/sol-thread.c:533: warning: dereferencing type-punned
> > pointer will break strict-aliasing rules
>
> We've seen this on other platforms with gcc 3.4 as well.  I think
> the best fix would be replace the problematic construct
>   supply_gregset (regcache, (const gdb_gregset_t *) &gregset);
> with
>
>  gdb_gregset_t *gregset_p = &gregset;
>
>  supply_gregset (regcache, (const gdb_gregset_t *) gregset_p);
>
> That seemed to fix the problems e.g. in i386-linux-nat.c (fetch_regs).
>

Indeed it does fix it here too.  Much nicer.  Thanks for the pointer.

Testsuite shows the same results as the previous version.

OK now?

-- 
Cheers,
Pedro Alves
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