On Wed, Dec 30, 2009 at 5:47 AM, Simon Marlow
On 30/12/09 11:09, Bulat Ziganshin wrote:
Hello Simon,
Wednesday, December 30, 2009, 1:44:54 PM, you wrote:
btw, is it possible to fix the behavior? it will reduce overhead for storing small strings
It would be possible yes. When the RTS needs to know the size of the array in words it would have to do a calculation, so you'd have to find all the places in the RTS that do this (probably only a handful, as most of them go through the arr_words_sizeW() inline function).
I don't plan to do this right now. If someone else wants to tackle it then please go ahead, it'd be a fun afternoon hack.
I've written this up as ticket 3800: http://hackage.haskell.org/trac/ghc/ticket/3800 The patches for ghc and integer-gmp are attached to the ticket. Antoine