id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
2881,Basic Fibonacci function using Word causes ghci to panic. - 6.10.1,axman6,simonmar,"When inputting the function:

{{{
let fib :: Word -> Word; fib 0 = 1; fib 1 = 1; fib n = l + r where l = fib (n-2); r = fib (n-1)
}}}

GHCi produces a panic error:

{{{
ghc: panic! (the 'impossible' happened)
  (GHC version 6.10.1 for i386-apple-darwin):
	schemeE(AnnCase).my_discr __word 0
}}}

It has been confirmed on both OS X 10.5.5 and linux


",bug,closed,low,6.12 branch,GHCi,6.10.1,fixed,panic Word fibonacci,,Unknown/Multiple,Unknown/Multiple,,Easy (less than 1 hour),,,,