cvs diff bug

[Jiri Moskovcak]

Hi,
if I try to run "cvs -n -t diff -r BASE -r other_tag foo" and foo is 
deleted file, the command fails with this message:

-> main loop with CVSROOT=/tmp/test-cvsroot/
-> Reader_Lock(/tmp/test-cvsroot)
-> RCS_checkout (/tmp/test-cvsroot/c.inu,v, 1.1, , , /tmp/cvsUk6bBD)
-> RCS_checkout (/tmp/test-cvsroot/c.inu,v, -1.1, , , (function))
cvs: rcs.c:4207: RCS_checkout: Assertion `rev == ((void *)0) || 
((*__ctype_b_loc ())[(int) (((unsigned char) *rev))] & (unsigned short 
int) _ISdigit)' failed.
cvs [diff aborted]: received abort signal
-> Lock_Cleanup()

It seems that BASE tag expands to -1.1 and rcs tries to checkout version 
-1.1.

Thanks for any advice.
J.M.