[perl #39088] [TODO] Add conditional GCC attributes to functions

[Andy Lester]

# New Ticket Created by Andy Lester
# Please include the string: [perl #39088]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=39088 >

GCC has a number of attributes that we can slap on functions. For
example, GCC's analysis of flow control will be greatly improved when
we put __attribute(noreturn)__ on real_exception(), to tell GCC that
it can't return, like exit().

I've done a ton of this for perl5, and can bring it on over.

--
Andy Lester => an...@petdance.com => www.petdance.com => AIM:petdance