glibc segfault on "special" long double values is _ok_!?

[Jim Meyering]

Andreas Schwab <schwab@suse.de> wrote:
> Jim Meyering <jim@meyering.net> writes:
>
>> I'm interested, because I don't want my applications to segfault on such
>> inputs.  Sure it may look a little far-fetched, but I think it's not.
>> Imagine such a bit pattern being injected into a network data stream
>> that is then printed as a long double.  Just printing an arbitrary
>> "long double" should not make a server vulnerable to a DoS attack.
>
> In which way is this different from passing NULL to strlen?

I'm surprised to hear you arguing that it is desirable for glibc's printf
implementation to segfault for a long-double with an unusual bit pattern.