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/Data/FastString.hs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'compiler/GHC/Data') diff --git a/compiler/GHC/Data/FastString.hs b/compiler/GHC/Data/FastString.hs index dcb6901b2c..bec549156f 100644 --- a/compiler/GHC/Data/FastString.hs +++ b/compiler/GHC/Data/FastString.hs @@ -290,7 +290,7 @@ instance Ord NonDetFastString where -- representation). Hence it is deterministic from one run to the other. newtype LexicalFastString = LexicalFastString FastString - deriving newtype (Eq, Show) + deriving newtype (Eq, Show, NFData) deriving stock Data instance Ord LexicalFastString where -- cgit v1.2.1