X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fparser%2FParserCore.y;fp=compiler%2Fparser%2FParserCore.y;h=7c22e2105a89cd4b994de02c494072697a3781db;hp=8cfafae9ba5804534a91e62f184fd2d5ec4ab73e;hb=8b104b69acda45c272a2faed0f1a2dd7e6972d87;hpb=72fd6d39870c75bd5d916620ed5e707f07179385

diff --git a/compiler/parser/ParserCore.y b/compiler/parser/ParserCore.y
index 8cfafae..7c22e21 100644
--- a/compiler/parser/ParserCore.y
+++ b/compiler/parser/ParserCore.y
@@ -1,4 +1,5 @@
 {
+{-# LANGUAGE BangPatterns #-} -- required for versions of Happy before 1.18.6
 {-# OPTIONS -Wwarn -w -XNoMonomorphismRestriction #-}
 -- The NoMonomorphismRestriction deals with a Happy infelicity
 --    With OutsideIn's more conservativ monomorphism restriction