As a workaround, you could try to use zeroTH to preprocess the template
haskell. (I have a patched version of zeroTH that works better but it
currently requires a patched version of GHC - ask me if you want it.)
ZeroTH darcs repo: http://darcs.haskell.org/~lemmih/zerothHead/
Original announcement by Lemmih:
http://permalink.gmane.org/gmane.comp.lang.haskell.template/219
--
Robin
On Fri, 27 Apr 2007 20:26:21 +0700
"ET"
Hi, folks
Trying to profile the modules, those contain a template-haskell splices, I have ran into problem - GHC6.4 (win2K) returns an error message and then stops. Without the "-prof" option all works fine.
Is there a way to bypass this inconsistency?
Example below illustrates the problem:
============================
{-# OPTIONS_GHC -fth #-} module Main where
import MainTH
main :: IO () main = putStrLn . show . fact $ 100
fact :: Integer -> Integer fact n = $(thFact "n")
============================
module MainTH where
import Language.Haskell.TH
thFact :: String -> ExpQ thFact s = appE (dyn "product") (arithSeqE (fromToR (litE . integerL $ 1) (dyn s)))
preview :: IO () preview = runQ (thFact "x") >>= putStrLn . pprint
============================
ghc --make -prof Main.hs Chasing modules from: Main.hs Compiling MainTH ( ./MainTH.hs, ./MainTH.o ) Compiling Main ( Main.hs, Main.o ) Loading package base-1.0 ... linking ... done. Loading package haskell98-1.0 ... linking ... done. Loading package template-haskell-1.0 ... linking ... done. ghc: ./MainTH.o: unknown symbol `_era'
With function "MainTH.preview" excluded from export list, final phrase were ghc: ./MainTH.o: unknown symbol `_entering_PAP'
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