#8101: No pattern match non-exhaustiveness warnings when compiling with -fno-code -------------------------------------+------------------------------------- Reporter: exbb2 | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: T8101 Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by DanielG): * status: closed => new * resolution: fixed => Comment: Looks to me like this is still an issue, I couldn't actually find a released version where this was ever fixed. This is also biting us in ghc-mod land: https://github.com/kazu-yamamoto /ghc-mod/issues/507 {{{ $ ghc-7.8.1 -fno-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, nothing ) $ ghc-7.8.4 -fno-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, nothing ) $ ghc-7.10.2 -fno-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, nothing ) # ghc-7.8.1 -fobject-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, A.o ) A.hs:7:9: Warning: Pattern match(es) are non-exhaustive In a case alternative: Patterns not matched: B C $ ghc-7.8.4 -fobject-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, A.o ) A.hs:7:9: Warning: Pattern match(es) are non-exhaustive In a case alternative: Patterns not matched: B C $ ghc-7.10.2 -fobject-code -fforce-recomp A.hs [1 of 1] Compiling A ( A.hs, A.o ) A.hs:7:9: Warning: Pattern match(es) are non-exhaustive In a case alternative: Patterns not matched: B C }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8101#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler