From f5e98bb31cf4dae740c8dc598ef207aa79d5a179 Mon Sep 17 00:00:00 2001
From: chessai <chessai1996@gmail.com>
Date: Mon, 17 Dec 2018 23:36:20 -0500
Subject: make QSem and QSemN newtypes

Reviewers: RyanGlScott, ekmett, hvr, bgamari

Reviewed By: bgamari

Subscribers: rwbarton, carter

GHC Trac Issues: #15995

Differential Revision: https://phabricator.haskell.org/D5456
---
 libraries/base/Control/Concurrent/QSem.hs  | 3 +--
 libraries/base/Control/Concurrent/QSemN.hs | 4 +---
 2 files changed, 2 insertions(+), 5 deletions(-)

(limited to 'libraries/base')

diff --git a/libraries/base/Control/Concurrent/QSem.hs b/libraries/base/Control/Concurrent/QSem.hs
index ea396255a4..133d6e2ab8 100644
--- a/libraries/base/Control/Concurrent/QSem.hs
+++ b/libraries/base/Control/Concurrent/QSem.hs
@@ -1,6 +1,5 @@
 {-# LANGUAGE Safe #-}
 {-# LANGUAGE BangPatterns #-}
-{-# OPTIONS_GHC -funbox-strict-fields #-}
 
 -----------------------------------------------------------------------------
 -- |
@@ -39,7 +38,7 @@ import Data.Maybe
 --
 -- is safe; it never loses a unit of the resource.
 --
-data QSem = QSem !(MVar (Int, [MVar ()], [MVar ()]))
+newtype QSem = QSem (MVar (Int, [MVar ()], [MVar ()]))
 
 -- The semaphore state (i, xs, ys):
 --
diff --git a/libraries/base/Control/Concurrent/QSemN.hs b/libraries/base/Control/Concurrent/QSemN.hs
index b8c9274057..8b3ce5526e 100644
--- a/libraries/base/Control/Concurrent/QSemN.hs
+++ b/libraries/base/Control/Concurrent/QSemN.hs
@@ -1,6 +1,4 @@
 {-# LANGUAGE Safe #-}
-{-# LANGUAGE BangPatterns #-}
-{-# OPTIONS_GHC -funbox-strict-fields #-}
 
 -----------------------------------------------------------------------------
 -- |
@@ -41,7 +39,7 @@ import Data.Maybe
 --
 -- is safe; it never loses any of the resource.
 --
-data QSemN = QSemN !(MVar (Int, [(Int, MVar ())], [(Int, MVar ())]))
+newtype QSemN = QSemN (MVar (Int, [(Int, MVar ())], [(Int, MVar ())]))
 
 -- The semaphore state (i, xs, ys):
 --
-- 
cgit v1.2.1