ARC vs. generic sigaction (was Re: [PATCH 08/21] ARC: Linux Syscall Interface)

[Florian Weimer]

* Adhemerval Zanella:

> The only advantage of using a larger sigset_t from glibc standpoint is if
> kernel ever change it maximum number of supported signals it would not be
> a ABI change (it would be if glibc provided sigset_t need to be extended).

It's not just the kernel.  We might want to restore additional state in
sigsetjmp, and historically, the excess signal space in sigset_t has
provided a way to do that even if there is no other space left in the
jump buffer.

Thanks,
Florian