diff options
author | Vladislav Zavialov <vlad.z.4096@gmail.com> | 2018-06-14 15:02:36 -0400 |
---|---|---|
committer | Richard Eisenberg <rae@cs.brynmawr.edu> | 2018-06-14 15:05:32 -0400 |
commit | d650729f9a0f3b6aa5e6ef2d5fba337f6f70fa60 (patch) | |
tree | ac224609397d4b7ca7072fc87739d2522be7675b /testsuite/tests/simplCore/should_compile/T15186A.hs | |
parent | 4672e2ebf040feffde4e7e2d79c479e4c0c3efaf (diff) | |
download | haskell-d650729f9a0f3b6aa5e6ef2d5fba337f6f70fa60.tar.gz |
Embrace -XTypeInType, add -XStarIsType
Summary:
Implement the "Embrace Type :: Type" GHC proposal,
.../ghc-proposals/blob/master/proposals/0020-no-type-in-type.rst
GHC 8.0 included a major change to GHC's type system: the Type :: Type
axiom. Though casual users were protected from this by hiding its
features behind the -XTypeInType extension, all programs written in GHC
8+ have the axiom behind the scenes. In order to preserve backward
compatibility, various legacy features were left unchanged. For example,
with -XDataKinds but not -XTypeInType, GADTs could not be used in types.
Now these restrictions are lifted and -XTypeInType becomes a redundant
flag that will be eventually deprecated.
* Incorporate the features currently in -XTypeInType into the
-XPolyKinds and -XDataKinds extensions.
* Introduce a new extension -XStarIsType to control how to parse * in
code and whether to print it in error messages.
Test Plan: Validate
Reviewers: goldfire, hvr, bgamari, alanz, simonpj
Reviewed By: goldfire, simonpj
Subscribers: rwbarton, thomie, mpickering, carter
GHC Trac Issues: #15195
Differential Revision: https://phabricator.haskell.org/D4748
Diffstat (limited to 'testsuite/tests/simplCore/should_compile/T15186A.hs')
-rw-r--r-- | testsuite/tests/simplCore/should_compile/T15186A.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/testsuite/tests/simplCore/should_compile/T15186A.hs b/testsuite/tests/simplCore/should_compile/T15186A.hs index 472d01c0af..151fcec987 100644 --- a/testsuite/tests/simplCore/should_compile/T15186A.hs +++ b/testsuite/tests/simplCore/should_compile/T15186A.hs @@ -32,7 +32,7 @@ data BinomialTree (h::Height) (f :: k -> Type) :: Ctx k -> Type where -> !(BinomialTree ('Succ h) f x) -> BinomialTree h f x -newtype Assignment (f :: k -> *) (ctx :: Ctx k) +newtype Assignment (f :: k -> Type) (ctx :: Ctx k) = Assignment (BinomialTree 'Zero f ctx) data AssignView f ctx where |