On 03/11/2013 07:04 PM, Simon Peyton-Jones wrote: > Aha. It is indeed true that > > ghc -fdefer-type-errors -w > > does not suppress the warnings that arise from the type errors; > indeed there is no current way to do so. How to do that? > > To be kosher there should really be a flag to switch off those > warnings alone, perhaps -fno-warn-type-errors > > So then -fwarn-type-errors is on by default, but is only relevant > when -fdefer-type-errors is on. Once -fdefer-type-errors is on, > -fno-warn-type-errors and -fwarn-type-errors suppress or enable the > warnings. -w would then include -fno-warn-type-errors.
GCC has a concept -Werror=unused-variable for example: each warning can be disabled, a warning, or an error. If GHC had that, we could have "type-errors" be a warning whose default state is -Werror. That's cleaner in a certain way, but it also seems fishy. Just throwing the idea out there. -Isaac _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users