sumdigits(n,B) doesn't refuse B < -1

"Ruud H.G. van Tol" <[email protected]>
Newsgroups gmane.comp.mathematics.pari.devel
Message-ID <[email protected]> 
? sumdigits(12345,-4)
% 5

Expected:

   ***   at top-level: sumdigits(12345,-4)
   ***                 ^------------------
   *** sumdigits: domain error in digits: B < 2
   ***   Break loop: type 'break' to go back to GP prompt
break>

-- Ruud
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