#11077: ghc panic: ieName failed pattern match (-fwarn-missing-exported-sigs) -------------------------------------+------------------------------------- Reporter: woehr | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 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: | -------------------------------------+------------------------------------- Changes (by thomie): * cc: gridaphobe (added) Comment: Thanks! Reproducible with HEAD. It seems `-fwarn-missing-exported-sigs` (#2526) has something to do with it. {{{ $ cat T11077.hs module T11077 (module X, foo) where import Data.List as X foo = undefined $ ghc -c T11077.hs -fwarn-missing-exported-sigs ghc: panic! (the 'impossible' happened) (GHC version 7.11.20151104 for x86_64-unknown-linux): ieName failed pattern match! }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11077#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler