[project @ 1998-01-12 09:29:22 by simonpj]

[ghc-hetmet.git] / ghc / compiler / reader / Lex.lhs

diff --git a/ghc/compiler/reader/Lex.lhs b/ghc/compiler/reader/Lex.lhs
index f04e4ce..b312655 100644 (file)
--- a/ghc/compiler/reader/Lex.lhs
+++ b/ghc/compiler/reader/Lex.lhs
@@ -1,3 +1,16 @@
+--------------------------------------------------------
+[Jan 98]
+There's a known bug in here:
+
+       If an interface file ends prematurely, Lex tries to
+       do headFS of an empty FastString.
+
+An example that provokes the error is
+
+       f _:_ _forall_ [a] <<<END OF FILE>>>
+--------------------------------------------------------
+
+
 %
 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
 %