#7110: Stack overflow when compiling with optimizations
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Reporter: EyalLotem | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Runtime crash | Testcase:
Blockedby: | Blocking:
Related: |
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This program:
{{{
import Control.Exception (evaluate)
main :: IO ()
main = do
let smap = concat . replicate 300 $ concat [" ", replicate 2027 '#', "
\n"]
evaluate $ fst (stringReader 1 smap)
stringReader :: Int -> String -> ((), String)
stringReader 1 ('\r':'\n':_) = ((), "")
stringReader _ ('\n':cs) = stringReader 1 cs -- unix
stringReader x (_:cs) = stringReader x cs
stringReader _ _ = ((), "")
}}}
Causes a stack overflow when compiled with -O2, and no problem when
compiled without optimizations.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7110>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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