New bug in cpp, bogus macro redefinition warnings

[Kaveh R. Ghazi]

Bootstrapping last night's snapshot on sparc-sun-solaris2.7 exposed a
new bug in cpp.  I get large amounts of macro redefinition warnings
(~1200) from the system headers.

They come from macros defined to the same value more than once, but
one instance is followed by a comment.  E.g. you can see what I mean
in the following two line file.

 > #define FOO 10 /* sdf */
 > #define FOO 10

(Perhaps you want to install this as a test case.)

With last night's "gcc version 2.96 20000229 (experimental)", it gives:

 > foo.c:2:14: warning: `FOO' redefined
 > foo.c:1:11: warning: this is the location of the previous definition

		--Kaveh
--
Kaveh R. Ghazi			Engagement Manager / Project Services
ghazi@caip.rutgers.edu		Qwest Internet Solutions