#7245: INLINEing top-level patterns causes ghc to emit 'arity missing' traces
------------------------------+---------------------------------------------
Reporter: jwlato | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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When an INLINE pragma is specified on a pattern, ghc-7.6.1 shows some
internal trace messages.
{{{
module Foo where
{-# INLINE widths #-}
widths :: [Int]
widthMonth, widthYear :: Int
widths@[widthMonth, widthYear] = [1,2]
}}}
{{{
~/Downloads$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.6.1
~/Downloads$ ghc Foo.hs -O
[1 of 1] Compiling Foo ( Foo.hs, Foo.o )
makeCorePair: arity missing widths{v aeJ} [lid]
}}}
I'm not certain that specifying an INLINE pragma in this context even
makes sense, in which case perhaps a more useful warning could be
produced.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7245>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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