| So, the fold/build rule is being applied even if you run GHC with | -fno-foldr-build-on. I RTFSed, and it appears that the only place in GHC | where the -ffoldr-build-on command-line option is looked at is in | DsListComp.lhs. | | In the flag reference in the manual, the effect of -ffoldr-build-on is listed | as "Enable foldr-build optimisation" (presumably suggesting that | -fno-foldr-build-on disables the optimization). This seems misleading if the | only thing that -ffoldr-build-on/-fno-foldr-build-on actually does is to | control whether list comprehensions are desugared using foldr/build.
It's definitely misleading. I've removed it, replacing it with a -frules-off flag to switch off all rewrite rules. There's no way to switch off foldr/build all by itself. Simon _______________________________________________ Glasgow-haskell-bugs mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
