Data/Time/Format/Parse cannot be compiled with -DDEBUG

[Christian.Maeder@…]

../../compiler/ghc-inplace -O -fasm -DDEBUG -keep-s-files -keep-raw-s-files -Wall -Werror -fffi -Iinclude -package-name  time-1.1.1 -O -Rghc-timing -fgenerics  -package base -fgenerics    -c Data/Time/Format/Parse.hs -o Data/Time/Format/Parse.o  -ohi Data/Time/Format/Parse.hi
NOTE: Simplifier still going after 4 iterations; bailing out.
NOTE: Simplifier still going after 3 iterations; bailing out.
ghc-6.6.1: panic! (the 'impossible' happened)
  (GHC version 6.6.1 for i386-apple-darwin):
        ASSERT failed! file simplCore/Simplify.lhs line 541
[y{v s61y} [lid] [Just S] :: base:GHC.Num.Integer{tc 314}
 [Str: DmdType]
 y{v s61y} [lid] =
   base:GHC.Num.plusInteger{v 0F} [gid]
     (base:GHC.Num.timesInteger{v 0G} [gid]
        lit_a1UF{v} [lid]
        (base:GHC.List.poly_last'{v r1og} [gid]
           @ base:GHC.Num.Integer{tc 314}
           lit_a1S5{v} [lid]
           (go{v s61t} [lid] cs{v s61h} [lid])))
     (base:GHC.List.poly_last'{v r1og} [gid]
        @ base:GHC.Num.Integer{tc 314}
        lit_a1RW{v} [lid]
        (go{v s61w} [lid] cs{v s61h} [lid]))]

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

<<ghc: 594608812 bytes, 7 GCs, 4204804/8287284 avg/max bytes residency (2 samples), 294M in use, 0.00 INIT (0.00 elapsed), 1.67 MUT (2.09 elapsed), 0.10 GC (0.11 elapsed) :ghc>>
make[2]: *** [Data/Time/Format/Parse.o] Error 1

[simonpj]

I've just tried this with the HEAD, and it's fine, so I'm inclined not to worry. If anyone sees this error with HEAD I'd certainly investigate though.

So I'll make this "wontfix" for now.

Thanks for reporting it though.

Simon