#8138: Core lint fails with error "Role incompatibility: expected N, got R"
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Reporter: gmainland | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.7
Keywords: | Operating System: Unknown/Multiple
Architecture: Unknown/Multiple | Type of failure: Other
Difficulty: Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: |
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I'm seeing a core lint error, "Role incompatibility: expected N, got R",
on 333273792479695cf79a72cffa4c579d0c9deb21. The attached program will
reproduce the error when compiled as:
{{{
ghc -O2 -dcore-lint Role.hs
}}}
Note that `-O2` is required for core lint to complain.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8138>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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