X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcRnTypes.lhs;h=37f1eab752d8af093873ed39b7d4952e7fd8b8d9;hp=b335b54391b5271db23dec4ffeb3a81ffd900243;hb=4287edeb7f329529149d8c95597d5e418388265f;hpb=366e8db02ab7a5bb5316699bff397d06e47891b2;ds=sidebyside

diff --git a/compiler/typecheck/TcRnTypes.lhs b/compiler/typecheck/TcRnTypes.lhs
index b335b54..37f1eab 100644
--- a/compiler/typecheck/TcRnTypes.lhs
+++ b/compiler/typecheck/TcRnTypes.lhs
@@ -469,7 +469,8 @@ of whether the imported things are actually used or not
 It is used 	* when processing the export list
 		* when constructing usage info for the inteface file
 		* to identify the list of directly imported modules
-			for initialisation purposes
+			for initialisation purposes and
+			for optimsed overlap checking of family instances
 		* when figuring out what things are really unused
 
 \begin{code}