#16077: AvailTC Invariant being violated -------------------------------------+------------------------------------- Reporter: harpocrates | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by harpocrates): I've begun to investigate this and none of this actually requires `cabal`. Using `A.hs` and `B.hs` from the bug summary, just run {{{ $ ghc -fforce-recomp -ddump-rn-trace A.hs B.hs | grep rnExports rnExports: Exports: [error, C{C, T;}, T{T, TI;}] rnExports: Exports: [C{C, T;}, T{TI;}] }}} The asymmetry is pretty clear. Also, this is reproducible on HEAD. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16077#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler