Bug in cpp (4.1BSD, 2.9BSD)

[Maarten Litmaath]

We noticed that the following file will pass cpp
without any error message:

#ifdef a
#ifdef b
#ifdef a
#endif
#endif
#else

This isn't supposed to be a feature, is it?

Benno van den Brink (bvdbrin at cs.vu.nl), Maarten Litmaath (maart at cs.vu.nl)
-- 
South-Africa:                         |Maarten Litmaath @ Free U Amsterdam:
           revival of the Third Reich |maart at cs.vu.nl, mcvax!botter!ark!maart