id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
2223,Int64.toInteger,gnezdo,igloo,"{{{
GHCi, version 6.8.2: http://www.haskell.org/ghc/  :? for help
Loading package base ... linking ... done.
Prelude> 0 == (-1 `Data.Bits.shift` 32 :: Data.Int.Int64)
False
Prelude> 0 == toInteger (-1 `Data.Bits.shift` 32 :: Data.Int.Int64)
True
-- ^^^ BUG
}}}

The problem appears to be in the recently changed
rts/PrimOps.cmm::int64ToIntegerzh_fast:
{{{
   if ( hi != 0 && hi != 0xFFFFFFFF )  { 
      words_needed = 2;
   } else { 
       // minimum is one word
       words_needed = 1;
   }
}}}

So, 0xFFFFFFFF00000000 becomes 0.",merge,closed,normal,6.8.3,Runtime System,6.8.2,fixed,,wolfgang.thaller@…,Linux,x86,,Unknown,arith011,,,