Re: Default value of x87 registers' reserved bits

[Stathis Kamperis <ekamperi%gmail.com@localhost>]

2010/5/30 Joerg Sonnenberger <joerg%britannica.bec.de@localhost>:
> On Sun, May 30, 2010 at 02:48:42PM +0300, Stathis Kamperis wrote:
>> There's a corner case though, that needs special treatment. For
>> example, what would happen if for some reason (?) the user did
>> something like:
>>
>> fenv_t tmp;
>> memcpy(&tmp, FE_DFL_ENV, sizeof tmp);
>>
>> and then at some point:
>>
>> feupdateenv(&tmp);
>
> I don't see why this requires a special case?
>

Do you say that we will unconditionally copy&set the reserved bits,
even if the argument is not FE_DFL_ENV?

Because if only do the completion for FE_DFL_ENV, envp == FE_DFL_ENV
is not a strong enough condition.

Thanks,
Stathis