preprocessor/10513: Annoying warning

[nathan@gcc.gnu.org]

Synopsis: Annoying warning

State-Changed-From-To: open->closed
State-Changed-By: nathan
State-Changed-When: Sun Apr 27 15:11:32 2003
State-Changed-Why:
    not a bug. the result of ## is undefined if it does not result
    in a pp token. '::i' is not a pp token.
    #define M(a) a i // this is fine

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10513