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{-# OPTIONS_GHC -XMagicHash #-}
module Main where
import GHC.Base
import Foreign
import Foreign.C
import GHC.Ptr (Ptr(..))
utf8DecodeChar# :: Addr# -> Bool -> Bool
{-# NOINLINE utf8DecodeChar# #-}
utf8DecodeChar# a# fred =
case () of
_ | word2Int# (indexWord8OffAddr# a# 0#) <=# 0x7F# -> True
-- Omitting the next line gives an ASSERT error:
-- ghc-6.9: panic! (the 'impossible' happened)
-- (GHC version 6.9 for x86_64-unknown-linux):
-- ASSERT failed! file nativeGen/MachCodeGen.hs line 1049
-- %MO_S_Le_I8(I8[R2], 127 :: I8)
| fred -> True
| otherwise -> False
main = print (utf8DecodeChar# "\128"# False) -- should be False
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