From 17fcce4ca5bf1418d8f335e869d328e1913d3f95 Mon Sep 17 00:00:00 2001 From: Zubin Duggal Date: Tue, 16 May 2023 14:34:19 +0530 Subject: compiler: Remove instance Binary Char It is generally not a good idea to serialise strings as [Char] into interface files, as upon deserialisation each of these would be turned into a highly memory inefficient structure mostly composed of cons cells and pointers. If you really want to serialise a Char, use the SerialisableChar newtype. --- compiler/GHC/Unit/Module/Deps.hs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'compiler/GHC/Unit/Module/Deps.hs') diff --git a/compiler/GHC/Unit/Module/Deps.hs b/compiler/GHC/Unit/Module/Deps.hs index 75063e901f..894fa7a4aa 100644 --- a/compiler/GHC/Unit/Module/Deps.hs +++ b/compiler/GHC/Unit/Module/Deps.hs @@ -283,7 +283,7 @@ data Usage usg_file_hash :: Fingerprint, -- ^ 'Fingerprint' of the file contents. - usg_file_label :: Maybe String + usg_file_label :: Maybe FastString -- ^ An optional string which is used in recompilation messages if -- file in question has changed. -- cgit v1.2.1