#5829: break003 fails with a DEBUG compiler
---------------------------------+------------------------------------------
Reporter: igloo | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 7.6.1
Component: Compiler | Version: 7.4.1-rc2
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase: break003
Blockedby: | Blocking:
Related: |
---------------------------------+------------------------------------------
break003 fails with a DEBUG compiler:
{{{
$ cat Test3.hs
mymap f [] = []
mymap f (x:xs) = f x:mymap f xs
main = mapM_ putStrLn $ mymap ('a':) ["hello","bye"]
}}}
{{{
$ ghci Test3.hs
GHCi, version 7.4.0.20120126: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
[1 of 1] Compiling Main ( Test3.hs, interpreted )
Ok, modules loaded: Main.
*Main> :b 2
Breakpoint 0 activated at Test3.hs:2:18-31
*Main> main
Stopped at Test3.hs:2:18-31
_result :: [a] = _
f :: t -> a = _
x :: t = _
xs :: [t] = [_]
[Test3.hs:2:18-31] *Main> f
ghc-stage2: panic! (the 'impossible' happened)
(GHC version 7.4.0.20120126 for x86_64-apple-darwin):
ASSERT failed! file compiler/typecheck/TcEnv.lhs line 427
( it{v am5} [lid] :: ( t{tv Im0} [rt] :: ghc-prim:GHC.Prim.*{(w) tc 34d} )
-> ( a{tv Im1} [rt] :: ghc-prim:GHC.Prim.*{(w) tc
34d} ) )
( t{tv Im0} [rt] :: ghc-prim:GHC.Prim.*{(w) tc 34d} )
-> ( a{tv Im1} [rt] :: ghc-prim:GHC.Prim.*{(w) tc 34d} )
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
[Test3.hs:2:18-31] *Main>
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5829>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
