#11066: Inacessible branch should be warning - otherwise breaks type soundness? -------------------------------------+------------------------------------- Reporter: rrnewton | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.6.1 Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: #8128, #8740 | Differential Rev(s): Phab:D1454 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj):
But that doesn't seem right.
It seems fine to me, arguably. The equality `a~b` is not needed; running `unsafe3` will never seg-fault. It's not worth losing sleep over this. BTW, if it's now a warning do we have a flag to control whether the warning is enabled? We should. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11066#comment:45 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler