#2395: "Pattern match(es) are overlapped" warning with a single view pattern
(ghc
6.9.20080606)
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Reporter: rwbarton | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.10 branch
Component: Compiler | Version: 6.9
Severity: minor | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: x86
Os: Linux |
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Changes (by igloo):
* difficulty: => Unknown
* milestone: => 6.10 branch
Comment:
This is due to this case of `check'` in `deSugar/Check.lhs`:
{{{
-- FIXME: hack to get view patterns through for now
| otherwise = ([([],[])],emptyUniqSet)
}}}
(the `emptyUniqSet` means "the pattern is never used").
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2395#comment:1>
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