GHC Panic on import with 'OPTIONS_GHC -fobject-code -O'
I get
> :l Test.hs
[1 of 1] Compiling Main ( Test.hs, interpreted )
ghc: panic! (the 'impossible' happened)
(GHC version 7.10.2 for x86_64-apple-darwin):
floatExpr tick break<11>()
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
with Test.hs:
{-# OPTIONS_GHC -fobject-code -O #-}
import Control.Exception (assert)
import Data.Char (ord)
f :: String -> String
f s = assert (all (`elem` letters) s) $ (letters!!) <$> (ix <$> s)
where
ix ch = (ord ch - ord 'A')
letters = ['A'..'Z']
OSX 10.11, GHC 7.10.2; uad-core 64-bit haswell; Homebrew GHC
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |