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authorSeraphime Kirkovski <kirkseraph@gmail.com>2016-06-06 12:29:38 +0200
committerBen Gamari <ben@smart-cactus.org>2016-06-06 15:07:18 +0200
commita90085bd45239fffd65c01c24752a9bbcef346f1 (patch)
tree41a85ba36720d8fba0a3296ea7a844dd9fc0042a /libraries/base/GHC/STRef.hs
parent48e9a1f5521fa3185510d144dd28a87e452ce134 (diff)
downloadhaskell-a90085bd45239fffd65c01c24752a9bbcef346f1.tar.gz
Add @since annotations to base instances
Add @since annotations to instances in `base`. Test Plan: * ./validate # some commets shouldn't break the build * review the annotations for absurdities. Reviewers: ekmett, goldfire, RyanGlScott, austin, hvr, bgamari Reviewed By: RyanGlScott, hvr, bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2277 GHC Trac Issues: #11767
Diffstat (limited to 'libraries/base/GHC/STRef.hs')
-rw-r--r--libraries/base/GHC/STRef.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/libraries/base/GHC/STRef.hs b/libraries/base/GHC/STRef.hs
index 9997f72681..22db7f32db 100644
--- a/libraries/base/GHC/STRef.hs
+++ b/libraries/base/GHC/STRef.hs
@@ -45,5 +45,6 @@ writeSTRef (STRef var#) val = ST $ \s1# ->
(# s2#, () #) }
-- Just pointer equality on mutable references:
+-- | @since 2.01
instance Eq (STRef s a) where
STRef v1# == STRef v2# = isTrue# (sameMutVar# v1# v2#)