[commit: containers] master: Fix GHC HEAD build breakages (390a146)

[Ian Lynagh]

Repository : ssh://darcs.haskell.org//srv/darcs/packages/containers

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/390a14662d98dd73256762f9d02eedb6632a250d

>---------------------------------------------------------------

commit 390a14662d98dd73256762f9d02eedb6632a250d
Author: Johan Tibell <johan.tibell at gmail.com>
Date:   Wed Jan 18 08:52:26 2012 -0800

    Fix GHC HEAD build breakages
    
    GHC HEAD adds a warning for SPECIALISE pragmas that will never fire
    and Data.Sequence contains such a pragma.

>---------------------------------------------------------------

 Data/Sequence.hs |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/Data/Sequence.hs b/Data/Sequence.hs
index 1513bbf..5f430ab 100644
--- a/Data/Sequence.hs
+++ b/Data/Sequence.hs
@@ -5,6 +5,18 @@
 #if __GLASGOW_HASKELL__ >= 703
 {-# LANGUAGE Trustworthy #-}
 #endif
+{-# OPTIONS_GHC -Wwarn #-}
+
+-- The above -Wwarn is due to e.g.
+--
+-- {-# INLINE deep #-}
+-- {-# SPECIALIZE INLINE deep :: Digit (Elem a) -> FingerTree (Node (Elem a))
+--                            -> Digit (Elem a) -> FingerTree (Elem a) #-}
+--
+-- SPECIALISE really is wrong here.  We should either specialise or
+-- inline.  Not sure which is wanted.  Newer GHCs will emit a warning
+-- in this case.
+
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Data.Sequence