how widespread is this cpp bug?

[Doug Gwyn]

In article <6625 at csli.STANFORD.EDU> wagner at arisia.xerox.com (Juergen Wagner) writes:
>      proc/**/VERSION
>People relying on this bug should change their habits. There are better ways
>to concatenate tokens.

No, for Reiser-based preprocessors there aren't any better ways.
ANSI-style token pasting is fairly new, and many C implementations
in current use do not support it.