I'm not a GHC developer but I think you should report a bug here: https://ghc.haskell.org/trac/ghc/wiki/ReportABug
I've done it a couple of times and if you provide a reproducible test case it will usually get looked at at some point. Managing all the bugs on a mailing list would be a nightmare. If you're worried it might not actually be a bug well they can always just close it. On Fri, Dec 9, 2016 at 10:43 AM, Geraint Jones < geraint.jo...@wolfson.ox.ac.uk> wrote: > I have this little demo which I use for sixth formers which includes > calculating in fairly rapid order the sum of the digits of the > 10^9th Fibonacci number. (I haven't got enough physical memory to > do the same for the 10^10th number without thrashing...) It fell > over on a flashy new macbook I was going to use for the presentation > the other day; indeed I found I couldn't even calculate the sum of > the digits of the 10^6th number. > > I've reduced the problem to calculating numbers as large as 2^10000000 > (as an Integer, of course), which works on all the ghci 7.8.4 > implementations I can find on various machines around the department, > but which falls over on the 8.0.1 implementation on my macbook. > > 2^1000000 is fine, but 2^10000000 causes a bus error which may well > be a stack overflow in libHSinteger-gmp-1.0.0.1-ghc8.0.1.dylib > > I don't seem to have easy access to 8.0.1 elsewhere or other > implementations on a mac. Does anyone have a handle on whether this > is a problem with the sizing of the mac implementation or whether it > is a pervasive 8.0.1 problem? Either way, it doesn't seem friendly > that it manifests as an uncaught bus error. > _______________________________________________ > Glasgow-haskell-users mailing list > Glasgow-haskell-users@haskell.org > http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users >
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