#14773: MultiWayIf makes it easy to write partial programs that are not catched by -Wall -------------------------------------+------------------------------------- Reporter: SimonHengel | Owner: sighingnow Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Resolution: | Keywords: | PatternMatchWarnings 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 sighingnow): I'm confused with the following comments at Check.hs: https://ghc.haskell.org/trac/ghc/browser/ghc/compiler/deSugar/Check.hs#L1904 {{{#!hs 1904 exhaustiveWarningFlag (StmtCtxt {}) = Nothing -- Don't warn about incomplete patterns 1905 -- in list comprehensions, pattern guards 1906 -- etc. They are often *supposed* to be 1907 -- incomplete }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14773#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler