#3943: unused variable warning in view pattern is wrong
---------------------------------+------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.12.1 | Keywords:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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{{{
{-# OPTIONS_GHC -Wall #-}
{-# LANGUAGE ViewPatterns #-}
test x = let (r,(r++) -> rs) = x in rs
}}}
{{{
Warning: Defined but not used: `r'
}}}
This seems only to happen in let (not in function clauses, or in lambdas,
or in case).
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3943>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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