Hello Einar,
Sunday, October 30, 2005, 4:20:20 PM, you wrote:
EK I am having problems with GHC 6.4.1 dying with the message:
EK ghc-6.4.1: panic! (the `impossible' happened, GHC version 6.4.1):
EK Prelude.last: empty list
EK The source is nontrivial and contains template haskell. The error
EK seems to appear after byte code generation.
are you will be glad to see trivial source of this problem? :)
{-# OPTIONS_GHC -fglasgow-exts -fth #-}
module Main where
main = return ()
$( [d| |] = return.tail)
C:\!\Haskell\ghc --make -ddump-splices test-derive.hs
Chasing modules from: test-derive.hs
Compiling Main ( test-derive.hs, test-derive.o )
Loading package base-1.0 ... linking ... done.
Loading package haskell98-1.0 ... linking ... done.
Loading package template-haskell-1.0 ... linking ... done.
ghc.EXE: panic! (the `impossible' happened, GHC version 6.4.1):
Prelude.tail: empty list
Please report it as a compiler bug to glasgow-haskell-bugs@haskell.org,
or http://sourceforge.net/projects/ghc/.
as you see, TH sometimes just don't caught exceptions in your TH code.
moreover, with -ddump-splices TH can print code it generated and only
then panic on error in generation routine!
--
Best regards,
Bulatmailto:[EMAIL PROTECTED]
___
Glasgow-haskell-users mailing list
Glasgow-haskell-users@haskell.org
http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
