Fix bug in hashSubStringBA, which it appears has been broken for
ever. However, I suspect so far we've never tickled the bug in GHC.
2# -> ((ord# c0 *# 631#) +# (ord# c1 *# 217#) +# len#) `remInt#` hASH_TBL_SIZE#
_ -> ((ord# c0 *# 631#) +# (ord# c1 *# 217#) +# (ord# c2 *# 43#) +# len#) `remInt#` hASH_TBL_SIZE#
where
- c0 = indexCharArray# ba# 0#
- c1 = indexCharArray# ba# (len# `quotInt#` 2# -# 1#)
- c2 = indexCharArray# ba# (len# -# 1#)
+ c0 = indexCharArray# ba# (start# +# 0#)
+ c1 = indexCharArray# ba# (start# +# (len# `quotInt#` 2# -# 1#))
+ c2 = indexCharArray# ba# (start# +# (len# -# 1#))
-- c1 = indexCharArray# ba# 1#
-- c2 = indexCharArray# ba# 2#