#10560: -f and -O options interact in non-obvious, order dependent ways -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by bgamari): I have opened Phab:D1008 to document the current behavior. nomeata, I find the fact that the `-f` flags are order dependent to be perfectly acceptable. Moreover, I don't know how else one would handle this without losing expressive power. I think the real issue is the fact that `-O` and `-f` can silently conflict and one has know way of knowing this other than looking at `optLevelFlags` in the source. This tripped up both me and George in #10491. I think gidyn's suggestion of warning is a nice solution. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10560#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler