#10180: Lint check: Empty alternatives imply bottoming scrutinee -------------------------------------+------------------------------------- Reporter: nomeata | Owner: nomeata Type: task | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by simonpj): Replying to [comment:2 nomeata]:
So there is a lambda under the case, but it is a type lambda. Bogus or not?
Ha! There's a missing case in `exprIsBottom`: {{{ exprIsBottom (Lam v e) | isTyVar v = exprIsBottom e }}} Well spotted. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10180#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler