#2806: Require bang-patterns for unlifted bindings
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Reporter: simonpj | Owner:
Type: feature request | Status: new
Priority: normal | Milestone: 6.12.1
Component: Compiler | Version: 6.8.3
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Os: Unknown/Multiple
Architecture: Unknown/Multiple |
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Comment (by igloo):
Right, if a pattern contains a binder with an unlifted type, then you need
an outermost ! (to negate the implicit ~), and the binder needs to not be
(directly or indirectly) inside an explicit ~.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2806#comment:6>
GHC <http://www.haskell.org/ghc/>
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