X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FbasicTypes%2FIdInfo.lhs;h=77f0325ac3967b8d693e3480683fd1c6a66b7e28;hb=7f14b79fedbaf11d30ce96ec8440986ff5b2ac09;hp=c383f89a597701d1085c767dd1775bff88cd2f9f;hpb=2b64626e8b639030f62b1c1926db30288a5e9f7d;p=ghc-hetmet.git

diff --git a/compiler/basicTypes/IdInfo.lhs b/compiler/basicTypes/IdInfo.lhs
index c383f89..77f0325 100644
--- a/compiler/basicTypes/IdInfo.lhs
+++ b/compiler/basicTypes/IdInfo.lhs
@@ -243,7 +243,7 @@ setUnfoldingInfoLazily info uf 	-- Lazy variant to avoid looking at the
 
 setUnfoldingInfo :: IdInfo -> Unfolding -> IdInfo
 setUnfoldingInfo info uf 
-  = seqUnfolding uf `seq`
+  = seqUnfolding uf `seq`	-- This seq makes a BIG difference to Trac #4367
     info { unfoldingInfo = uf }
 
 setArityInfo :: IdInfo -> ArityInfo -> IdInfo