Actually, it appears that the .hl file isn't in gzipped format: $ zcat base-1.0.hl gzip: base-1.0.hl: not in gzip format Should it be? Or is zlib being used on parts of the file? David On Thu, Aug 27, 2009 at 10:31 AM, David Roundy wrote:

You've hit it on the head!

$ jhc --show-ho base-1.0.hl base-1.0.hl user error (Codec.Compression.Zlib: incompatible zlib version)

$ ghc-pkg latest zlib zlib-0.5.2.0

Does this mean my haskell zlib package (which I installed expressly for jhc) is itself broken, or that it's incompatible with jhc?

David

On Thu, Aug 27, 2009 at 9:18 AM, John Meacham wrote:

...

Hmm.. that is strange. if it is reading them then not listing them, that means that it is rejecting them for some reason like being unable to decode them. what versions of 'binary' and 'zlib' do you have? I don't think their format changed, but that would be a possibility. what does jhc --show-ho on the library file show?

       John

-- David Roundy

On Thu, Aug 27, 2009 at 7:47 AM, John Meacham wrote:

That is really strange. I am using the same haskell version of zlib as you, I thought the gz format it compress/decompressed to was pretty standard. What version of the C zlib library do you have? I have version 1.2.3 on my machine I used to build the hl file.

zlib != gzip. gzip adds some extra stuff. -- Taral "Please let me know if there's any further trouble I can give you." -- Unknown

My C zlib is version 1.2.3.3, from the debian package for lenny. You're right that that shouldn't cause any trouble. I don't expect that today I'll have time to track down the failure... I wonder if it could be related to the version of binary used? Since it looks like perhaps the sort of error zlib will give if you give it random data, as might happen if the format of the file as a whole changed. My binary is 0.4.1, the package shipped with debian lenny. David 1:1.2.3.3.dfsg-12 On Thu, Aug 27, 2009 at 10:47 AM, John Meacham wrote:

No, zlib is used to compress individual parts of the file independently. that way I can load certain bits of data without having to parse through everything before it. (like it can skip loading type checking information for modules that arn't directly imported)

That is really strange. I am using the same haskell version of zlib as you, I thought the gz format it compress/decompressed to was pretty standard. What version of the C zlib library do you have? I have version 1.2.3 on my machine I used to build the hl file.

When I do 'rm *.hl' and make libs in the tarball directory, I get an error: The output follows, which is rather lengthy, but might help. The final error is once again: user error (Codec.Compression.Zlib: incompatible zlib version) Not sure what this means. David $ make libs ./jhc --noauto -L- -L. -ilib/jhc --build-hl lib/jhc/jhc.cabal -o jhc-1.0.hl jhc --noauto -L- -L. -ilib/jhc --build-hl lib/jhc/jhc.cabal -o jhc-1.0.hl jhc 0.7.1 (0.7.0-13) Creating library from description file: "lib/jhc/jhc.cabal" Reading: "lib/jhc/jhc.cabal" Finding Dependencies... Using Ho Cache: '/mnt/home/droundy/.jhc/cache' Data.Char [lib/jhc/Data/Char.hs] lib/jhc/Data/Word.hs:2 - Warning: The pragma 'LANGUAGE' is unknown Data.Word [lib/jhc/Data/Word.hs] lib/jhc/Jhc/Prim.hs:2 - Warning: The pragma 'LANGUAGE' is unknown Jhc.Prim [lib/jhc/Jhc/Prim.hs] lib/jhc/Jhc/String.hs:2 - Warning: The pragma 'LANGUAGE' is unknown lib/jhc/Jhc/String.hs:17 - Warning: The pragma 'VCONSTRUCTOR' is unknown Jhc.String [lib/jhc/Jhc/String.hs] lib/jhc/Jhc/Types.hs:1 - Warning: The pragma 'LANGUAGE' is unknown Jhc.Types [lib/jhc/Jhc/Types.hs] Jhc.Basics [lib/jhc/Jhc/Basics.hs] Jhc.Int [lib/jhc/Jhc/Int.hs] Numeric [lib/jhc/Numeric.hs] Data.Ratio [lib/jhc/Data/Ratio.hs] Jhc.Float [lib/jhc/Jhc/Float.hs] Jhc.Enum [lib/jhc/Jhc/Enum.hs] Data.Int [lib/jhc/Data/Int.hs] Jhc.Inst.PrimEnum [lib/jhc/Jhc/Inst/PrimEnum.hs] Jhc.Order [lib/jhc/Jhc/Order.hs] Jhc.IO [lib/jhc/Jhc/IO.hs] lib/jhc/Foreign/C/Types.hs:2 - Warning: The pragma 'LANGUAGE' is unknown Foreign.C.Types [lib/jhc/Foreign/C/Types.hs] lib/jhc/Jhc/Options.hs:2 - Warning: The pragma 'LANGUAGE' is unknown Jhc.Options [lib/jhc/Jhc/Options.hs] Jhc.Num [lib/jhc/Jhc/Num.hs] Jhc.Show [lib/jhc/Jhc/Show.hs] Prelude [lib/jhc/Prelude.hs] Jhc.Inst.Enum [lib/jhc/Jhc/Inst/Enum.hs] Jhc.Inst.Read [lib/jhc/Jhc/Inst/Read.hs] Prelude.Float [lib/jhc/Prelude/Float.hs] Foreign.Marshal.Alloc [lib/jhc/Foreign/Marshal/Alloc.hs] Foreign.Marshal.Utils [lib/jhc/Foreign/Marshal/Utils.hs] Foreign.Ptr [lib/jhc/Foreign/Ptr.hs] Foreign.Storable [lib/jhc/Foreign/Storable.hs] Jhc.Addr [lib/jhc/Jhc/Addr.hs] Jhc.Inst.Show [lib/jhc/Jhc/Inst/Show.hs] Jhc.Monad [lib/jhc/Jhc/Monad.hs] Jhc.Inst.Storable [lib/jhc/Jhc/Inst/Storable.hs] Jhc.List [lib/jhc/Jhc/List.hs] Jhc.Maybe [lib/jhc/Jhc/Maybe.hs] Prelude.IO [lib/jhc/Prelude/IO.hs] Foreign.C.String [lib/jhc/Foreign/C/String.hs] Foreign.Marshal.Array [lib/jhc/Foreign/Marshal/Array.hs] System.C.Stdio [lib/jhc/System/C/Stdio.hs] Prelude.Text [lib/jhc/Prelude/Text.hs] Jhc.Text.Read [lib/jhc/Jhc/Text/Read.hs] Prelude.CType [lib/jhc/Prelude/CType.hs] Jhc.Tuples [lib/jhc/Jhc/Tuples.hs] Foreign.C.Error [lib/jhc/Foreign/C/Error.hs] System.IO.Unsafe [lib/jhc/System/IO/Unsafe.hs] Jhc.Array [lib/jhc/Jhc/Array.hs] Jhc.Handle [lib/jhc/Jhc/Handle.hs] Jhc.Hole [lib/jhc/Jhc/Hole.hs] Jhc.JumpPoint [lib/jhc/Jhc/JumpPoint.hs] System.Mem [lib/jhc/System/Mem.hs] System.Mem.StableName [lib/jhc/System/Mem/StableName.hs] Typechecking... [ 1 of 49- Jhc.Prim - 2 of 49- Jhc.String - 3 of 49] Jhc.Types (.............................................) [ 4 of 49] Foreign.C.Types (.............................................) [ 5 of 49] Data.Int (.............................................) [ 6 of 49] Jhc.Int (.............................................) [ 7 of 49] Jhc.Inst.PrimEnum(.............................................) [ 8 of 49] Jhc.Basics (.............................................) [ 9 of 49- Jhc.Enum -10 of 49] Jhc.Order (.............................................) [11 of 49] Jhc.Options (.............................................) [12 of 49] Jhc.IO lib/jhc/Jhc/IO.hs:128 - Warning: Explicit quantification is a non-haskell98 feature (.............................................) [13 of 49] Jhc.Monad (.............................................) [14 of 49] Jhc.Addr (.............................................) [15 of 49] Jhc.JumpPoint (.............................................) [16 of 49] Jhc.Array (.............................................) [17 of 49] System.Mem (.............................................) [18 of 49] System.Mem.StableName(.............................................) [19 of 49] Data.Word (.............................................) [20 of 49] Jhc.Show (.............................................) [21 of 49- Jhc.Num -22 of 49] Jhc.Float (.............................................) [23 of 49] Jhc.Inst.Show (.............................................) [24 of 49] Foreign.Storable (.............................................) [25 of 49] Foreign.Ptr (.............................................) [26 of 49] System.C.Stdio (.............................................) [27 of 49] Jhc.Inst.Storable(.............................................) [28 of 49] Jhc.List lib/jhc/Jhc/List.hs:14 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:18 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:28 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:29 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:31 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:34 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:83 - Warning: Explicit quantification is a non-haskell98 feature lib/jhc/Jhc/List.hs:86 - Warning: Explicit quantification is a non-haskell98 feature (.............................................) [29 of 49] Jhc.Maybe (.............................................) [30 of 49- Prelude.IO -31 of 49- Foreign.C.String -32 of 49- Foreign.Marshal.Array -33 of 49- Foreign.Marshal.Alloc -34 of 49] Foreign.Marshal.Utils(.............................................) [35 of 49] Jhc.Inst.Enum (.............................................) [36 of 49] Prelude.CType (.............................................) [37 of 49] Jhc.Text.Read (.............................................) [38 of 49] Jhc.Tuples (.............................................) [39 of 49- Data.Char -40 of 49- Numeric -41 of 49- Data.Ratio -42 of 49- Prelude -43 of 49- Jhc.Inst.Read -44 of 49- Prelude.Float -45 of 49] Prelude.Text (.............................................) [46 of 49] Jhc.Hole (.............................................) [47 of 49] System.IO.Unsafe (.............................................) [48 of 49] Foreign.C.Error (.............................................) [49 of 49] Jhc.Handle (.............................................) Compiling... [ 1 of 49- Jhc.Prim - 2 of 49- Jhc.String - 3 of 49] Jhc.Types <........**........................................> user error (Codec.Compression.Zlib: incompatible zlib version) make: *** [jhc-1.0.hl] Error 1

Oddly enough, reinstalling zlib seems to have fixed it. I guess what happened was that when my hard drive died and I restored my home directory from backup, on the reinstall I had a different version of zlib, since I switched back to debian from ubuntu. Who would have guessed? I wonder what the Haskell zlib package does that is so sensitive to zlib version number? I'd be very surprised if they broke ABI compatibility without changing the soname... David On Fri, Aug 28, 2009 at 8:15 PM, John Meacham wrote:

On Fri, Aug 28, 2009 at 12:41:02PM -0400, David Roundy wrote:

...

When I do 'rm *.hl' and make libs in the tarball directory, I get an error:

The output follows, which is rather lengthy, but might help.  The final error is once again:

user error (Codec.Compression.Zlib: incompatible zlib version)

I am not sure. that happens right when it makes the first zlip call to 'compress', so I think something must be wacky with your haskell zlib install. Since binary is not involved at that point.  perhaps you can try to erase and reinstall the zlib module? is it possible that when you built it it linked against a different zlib than it is finding at run time?

       John

-- John Meacham - ⑆repetae.net⑆john⑈ - http://notanumber.net/ _______________________________________________ jhc mailing list jhc@haskell.org http://www.haskell.org/mailman/listinfo/jhc

-- David Roundy