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This patch is taken from upstream. It fixes a test to work with GHC 8.6.
The paths have been slightly altered to work with the release tarball.
See <https://github.com/simonmar/monad-par/issues/66>.
From e20f81c8060208e4fb038e8f0e0668b41d72a6fb Mon Sep 17 00:00:00 2001
From: Clint Adams <clint@debian.org>
Date: Sat, 31 Aug 2019 14:12:34 -0400
Subject: [PATCH] Use a case statement instead of pattern-matching in
case_test_diamond
This avoids the need for a MonadFail instance. Closes #66
---
monad-par/tests/ParTests_shared.hs | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tests/ParTests_shared.hs b/tests/ParTests_shared.hs
index 31f438d..b2de50c 100644
--- a/tests/ParTests_shared.hs
+++ b/tests/ParTests_shared.hs
@@ -109,12 +109,15 @@ case_test_diamond :: Assertion
case_test_diamond = 9 @=? (m :: Int)
where
m = runPar $ do
- [a,b,c,d] <- sequence [new,new,new,new]
- fork $ do x <- get a; put b (x+1)
- fork $ do x <- get a; put c (x+2)
- fork $ do x <- get b; y <- get c; put d (x+y)
- fork $ do put a 3
- get d
+ abcd <- sequence [new,new,new,new]
+ case abcd of
+ [a,b,c,d] -> do
+ fork $ do x <- get a; put b (x+1)
+ fork $ do x <- get a; put c (x+2)
+ fork $ do x <- get b; y <- get c; put d (x+y)
+ fork $ do put a 3
+ get d
+ _ -> error "Oops"
-- | Violate IVar single-assignment:
--
--
2.23.0
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