[Factor-talk] stack effect

[Iain G. <iai...@ed...>]

why do I get the following error?

Stack effect declaration is wrong
inferred ( x x x -- x x )
declared ( amount coins -- ways )

from this lexical variable

:: cc ( amount coins -- ways )
    0 amount = [ 1 ]
    [ 0 < amount 0 coins = or [ 0 ]
      [ amount coins 1 - cc
        amount coins denominations at* drop - coins cc + ]
      if ]
      if ;