#7323: decoding GADTs gives internal error: stg_ap_v_ret
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Reporter: heisenbug | Owner:
Type: bug | Status: closed
Priority: normal | Milestone: 7.8.1
Component: Compiler | Version: 7.7
Resolution: invalid | Keywords:
Os: Linux | Architecture: x86_64 (amd64)
Failure: Runtime crash | Difficulty: Unknown
Testcase: yes | Blockedby:
Blocking: | Related:
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Comment(by int-e):
Interestingly, ghc 7.4.1 used to produce a {{{runTimeError "Impossible
case alternative"}}} for such cases rather than relying on the given value
to be bottom. Is this the result of an optimization (getting rid of
unreachable default branches in case, say) or an actual regression?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7323#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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