Add LANGUAGE BangPatterns to modules that use them

4 files changed, 4 insertions, 0 deletions

diff --git a/compiler/ghci/ByteCodeAsm.lhs b/compiler/ghci/ByteCodeAsm.lhs
index 6f6e51d0f5..dfc77e51b2 100644
--- a/compiler/ghci/ByteCodeAsm.lhs
+++ b/compiler/ghci/ByteCodeAsm.lhs
@@ -6,6 +6,7 @@ ByteCodeLink: Bytecode assembler and linker
 
 \begin{code}
 {-# OPTIONS -optc-DNON_POSIX_SOURCE #-}
+{-# LANGUAGE BangPatterns #-}
 
 module ByteCodeAsm (
         assembleBCOs, assembleBCO,
diff --git a/compiler/utils/Encoding.hs b/compiler/utils/Encoding.hs
index 336d9f0474..84b4e092f1 100644
--- a/compiler/utils/Encoding.hs
+++ b/compiler/utils/Encoding.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE BangPatterns #-}
 {-# OPTIONS_GHC -O #-}
 -- We always optimise this, otherwise performance of a non-optimised
 -- compiler is severely affected
diff --git a/compiler/utils/FastMutInt.lhs b/compiler/utils/FastMutInt.lhs
index 6aa1c798cf..61e3e853ec 100644
--- a/compiler/utils/FastMutInt.lhs
+++ b/compiler/utils/FastMutInt.lhs
@@ -1,4 +1,5 @@
 \begin{code}
+{-# LANGUAGE BangPatterns #-}
 {-# OPTIONS -cpp #-}
 {-# OPTIONS_GHC -O #-}
 -- We always optimise this, otherwise performance of a non-optimised
diff --git a/compiler/utils/FastString.lhs b/compiler/utils/FastString.lhs
index a357f9853f..dafdf6a837 100644
--- a/compiler/utils/FastString.lhs
+++ b/compiler/utils/FastString.lhs
@@ -2,6 +2,7 @@
 % (c) The University of Glasgow, 1997-2006
 %
 \begin{code}
+{-# LANGUAGE BangPatterns #-}
 {-# OPTIONS -fno-warn-unused-imports #-}
 -- XXX GHC 6.9 seems to be confused by unpackCString# being used only in
 --     a RULE