[project @ 2004-10-20 13:34:04 by simonpj]

[ghc-hetmet.git] / ghc / compiler / typecheck / TcRnDriver.lhs

diff --git a/ghc/compiler/typecheck/TcRnDriver.lhs b/ghc/compiler/typecheck/TcRnDriver.lhs
index 1e5743a..02b586a 100644 (file)
--- a/ghc/compiler/typecheck/TcRnDriver.lhs
+++ b/ghc/compiler/typecheck/TcRnDriver.lhs
@@ -424,6 +424,8 @@ the hi-boot interface as our checklist.
 checkHiBootIface :: TypeEnv -> [Name] -> TcM ()
 -- Compare the hi-boot file for this module (if there is one)
 -- with the type environment we've just come up with
+-- In the common case where there is no hi-boot file, the list
+-- of boot_names is empty.
 checkHiBootIface env boot_names
   = mapM_ (check_one env) boot_names