#2213: Confusing flags for rewrite rules
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Reporter: dons | Owner: dons
Type: bug | Status: assigned
Priority: normal | Milestone: 6.10 branch
Component: Compiler | Version: 6.8.2
Severity: normal | Resolution:
Keywords: rules, warnings | Difficulty: Unknown
Testcase: | Architecture: Unknown
Os: Unknown |
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Changes (by claus):
* keywords: => rules, warnings
* cc: rules, warnings (removed)
* cc: claus (added)
Comment:
i ran into `-frewrite-rules` here:
http://www.haskell.org/pipermail/glasgow-haskell-
users/2008-June/014912.html
the (slightly incorrectly) observed behaviour is *very* confusing:
* `-frewrite-rules` on its own is not sufficient to enable `RULES`,
presumably because they are discarded before they could be enabled
* `-fglasgow-exts` on its own is sufficient, presumably because `-O`
implied `-frewrite-rules` anyway
imho, wanting `RULES` to be applied implies wanting them to be parsed, not
discarded, so `-frewrite-rules` should imply all relevant language flags.
until that is the case, the odd dependency should be documented in the
flag reference.
btw, i changed the odd `cc`, moving `rules, warnings` to keywords. or do
these exist as `cc`s?
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2213#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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