#6013: the 'impossible' happened
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Reporter: tlvb | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 7.6.1
Component: Compiler (Type checker) | Version: 7.4.1
Resolution: duplicate | Keywords: panic, impossible,
type checker, renamer
Os: Linux | Architecture: x86_64 (amd64)
Failure: Compile-time crash | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related: #5961
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Changes (by pcapriotti):
* status: new => closed
* failure: GHCi crash => Compile-time crash
* related: => #5961
* difficulty: => Unknown
* milestone: => 7.6.1
* resolution: => duplicate
Comment:
Thanks for the report.
The problem in the code is that `Show` should be capitalized (in the
deriving clause of the definition of `Machine`).
However, you're right that GHC should report the error instead of
crashing. This is actually a duplicate of #5961, and fixed in HEAD.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6013#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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