#3431: Loading this module causes panic in interpreter.
-----------------------------+----------------------------------------------
Reporter: jsnx | Owner:
Type: bug | Status: new
Priority: normal | Component: GHCi
Version: 6.10.4 | Severity: major
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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This file causes a panic when I try to load it in {{{ghci}}}; but it
compiles
okay with {{{ghc}}}.
{{{
Loading package ghc-prim ... linking ... done.
Loading package integer ... linking ... done.
Loading package base ... linking ... done.
Prelude> :load Submutations.hs
[1 of 1] Compiling Submutations ( Submutations.hs, interpreted )
ghc: panic! (the 'impossible' happened)
(GHC version 6.10.4 for i386-apple-darwin):
schemeE(AnnCase).my_discr __word 0
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
>
}}}
This bug has been observed with 6.10.3 on OS X and 6.10.4 on both OS X and
x86_64 Linux.
When the definition of `permutations` is commented out and replaced with
`undefined`, the problem goes away.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3431>
GHC <http://www.haskell.org/ghc/>
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