Unbreak Show instance for Ptr caused by the changes to showHex
merge to STABLE
showsPrec p (Ptr a) rs = pad_out (showHex (word2Integer(int2Word#(addr2Int# a))) "") rs
where
-- want 0s prefixed to pad it out to a fixed length.
- pad_out ('0':'x':ls) rs =
+ pad_out ls rs =
'0':'x':(replicate (2*SIZEOF_HSPTR - length ls) '0') ++ ls ++ rs
-- word2Integer :: Word# -> Integer (stolen from Word.lhs)
word2Integer w = case word2Integer# w of