#7174: panic when using function in 'deriving' data declaration
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Reporter: shapeshifter | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.2 | Keywords:
Os: Linux | Architecture: Unknown/Multiple
Failure: Compile-time crash | Testcase:
Blockedby: | Blocking:
Related: |
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Hello. I haven't found any matching bugs for this. To reproduce:
1) Start up ghci
2) Enter something like the following, which contains a typo 'show'
instead of 'Show'.
{{{
data Test = Yes | No deriving (show, Eq)
}}}
3) ghci will panic saying:
{{{
Prelude> data Test = Yes | No deriving (show, Eq)
ghc: panic! (the 'impossible' happened)
(GHC version 7.4.2 for i386-unknown-linux):
nameModule show{tv aa0}
}}}
Notes:
* The 'show' can be substituted with any other function name
* It also happens on x86_64.
* It also happens when putting such a line into a .hs file and trying to
compile it
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7174>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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