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authorZubin Duggal <zubin.duggal@gmail.com>2023-05-16 14:34:19 +0530
committerZubin Duggal <zubin.duggal@gmail.com>2023-05-17 12:21:31 +0530
commit17fcce4ca5bf1418d8f335e869d328e1913d3f95 (patch)
tree18f5adee7cbcc938d4a1dd9b359659ca161c4661 /compiler/GHC/Unit/Module/Deps.hs
parent2972fd66f91cb51426a1df86b8166a067015e231 (diff)
downloadhaskell-wip/no-binary-char.tar.gz
compiler: Remove instance Binary Charwip/no-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.
Diffstat (limited to 'compiler/GHC/Unit/Module/Deps.hs')
-rw-r--r--compiler/GHC/Unit/Module/Deps.hs2
1 files changed, 1 insertions, 1 deletions
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.