#4893: panic! the 'impossible' happened: initC: srt_lbl
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Reporter: plc | Owner:
Type: bug | Status: infoneeded
Priority: normal | Milestone: 7.0.2
Component: Compiler | Version: 7.0.1
Keywords: impossible, dcore-lint | Testcase:
Blockedby: | Difficulty:
Os: Linux | Blocking:
Architecture: x86 | Failure: GHC rejects valid
program
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Comment(by aleator):
{{{
{-# LANGUAGE TransformListComp #-}
module Main where
import GHC.Exts
main = return [show a | a@(c,i,f) <- [(1,2,3)],then sortWith by i, then
group by c]
}}}
Will give the same error on compiling and when invoked from ghci it gives:
*Main> main
ghc: panic! (the 'impossible' happened)
(GHC version 7.0.1 for i386-apple-darwin):
nameModule i{v ac7}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4893#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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