Re: [Qemu-devel] [PATCH 04/22] vl: convert -tb-size to qemu_strtoul

["Daniel P. Berrange" <berrange@redhat.com>]

On Mon, Jul 03, 2017 at 12:46:06PM -0700, Richard Henderson wrote:
> On 07/03/2017 09:34 AM, Paolo Bonzini wrote:
> > -extern int tcg_tb_size;
> > +extern unsigned long tcg_tb_size;
> 
> size_t would be more natural.
> 
> I don't think we support any hosts for which sizeof(size_t) !=
> sizeof(unsigned long), but perhaps
> 
> 	unsigned lomg tmp;
> 	if (qemu_strtoul(optarg, NULL, 0, &tmp) < 0
>             || tmp != (size_t)tmp) {
> 	  error_report("Invalid argument to -tb-size");
> 	  exit(1);
> 	}
> 	tcg_tb_size = tmp;
> 
> where I'd expect the extra comparison to be optimized away.

If we wanted to use size_t, then I'd suggest we added a qemu_strtoXXX
variant that directly returned a size_t, and did suitabled bounds
checking

> But I'm not overly concerned either way, so

Agreed, doesn't need fixing now

> Reviewed-by: Richard Henderson <rth@twiddle.net>

Regards,
Daniel
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