other/8948: [3.3 regression] Definition of __i686 causes big Problems

[Joe Buck]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8948

The definition of __i686 has been present in gcc all along; removing it will
cause other regressions (any code that depends on it will break), so 
that's not an
option.

Will glibc-2.3.1 build with older gcc's?  If so, why isn't there trouble 
from
sysdep.h in such cases?

Volker, you are calling this a regression, but do older gcc's actually work?
If so, how?  They define __i686 too, in exactly the same way.