#12056: Too aggressive `-w` option -------------------------------------+------------------------------------- Reporter: asr | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: #11429, #11789 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by wozgonon): Seems to occur for any option prefixed with -W. Note the warnings for -W<...> are: 1) displayed first, out of order 2) displayed with a prefix "\non the commandline:" {{{ ghc -wfoo -wbar -sfoo -sbar -Sfoo -Wfoo -Wbar -Wa -Wb -Wc on the commandline: warning: unrecognised warning flag: -Wfoo on the commandline: warning: unrecognised warning flag: -Wbar on the commandline: warning: unrecognised warning flag: -Wa on the commandline: warning: unrecognised warning flag: -Wb on the commandline: warning: unrecognised warning flag: -Wc ghc.exe: unrecognised flag: -wfoo unrecognised flag: -wbar unrecognised flag: -sfoo unrecognised flag: -sbar unrecognised flag: -Sfoo }}} When -w is added (even as a suffix) warnings for -W<...> options disappear {{{ ghc -wfoo -wbar -sfoo -sbar -Sfoo -Wfoo -Wbar -Wa -Wb -Wc -w ghc.exe: unrecognised flag: -wfoo unrecognised flag: -wbar unrecognised flag: -sfoo unrecognised flag: -sbar unrecognised flag: -Sfoo }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12056#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler