Bug 873385

Ah I see.  I wonder if it is a 64 bit issue?

Unfortunately hugs is pretty much dead^Wunmaintained now AFAIK.

Anyway I will try to have a look at the code later and
maybe compare with the current random package and see
if I can come up with a patch... of course there could
be other 64bit problems lurking.

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Still happening with F19

And still for F21 of course.

hugs98.i686 seems okay: so installed that by hand would be a workaround perhaps.

I tested on Ubuntu amd64 and got the same error
(I guess the Debian package also has this problem).

(FWIW 64bit ghci gives:

Prelude> toInteger (minBound :: Int)
-9223372036854775808
)

Hugs seems to be assuming Int32, but something is indeed going
wildly wrong with "toInteger (minBound::Int)".

I looked at:

src/bignums.c:326:primFun(primIntToInteger) {		/* Conversion :: Int -> Integer	   */

but I am not familiar with hugs' internals and things
seems to get into deep water quickly.


BTW "toInteger (minBound + 1:: Int) -1"
and "toInteger (minBound -1:: Int) +1"
seem to give the expected answer.

I almost wonder if it would be better to drop 64bit arch build for hugs.

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