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| author | Ryan Scott <ryan.gl.scott@gmail.com> | 2020-03-26 16:10:51 -0400 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2020-03-31 10:54:57 -0400 |
| commit | 33f095511a8fce4c945bbcd4feb3910c854dcb61 (patch) | |
| tree | 0ea4de3aeafb11096d573a982b257c47910a0b47 /testsuite/tests | |
| parent | 57b888c0e90be7189285a6b078c30b26d0923809 (diff) | |
| download | haskell-33f095511a8fce4c945bbcd4feb3910c854dcb61.tar.gz | |
Add regression test for #17963
The panic in #17963 happened to be fixed by commit
e3c374cc5bd7eb49649b9f507f9f7740697e3f70. This patch adds a
regression test to ensure that it remains fixed.
Fixes #17963.
Diffstat (limited to 'testsuite/tests')
| -rw-r--r-- | testsuite/tests/polykinds/T17963.hs | 15 | ||||
| -rw-r--r-- | testsuite/tests/polykinds/T17963.stderr | 13 | ||||
| -rw-r--r-- | testsuite/tests/polykinds/all.T | 1 |
3 files changed, 29 insertions, 0 deletions
diff --git a/testsuite/tests/polykinds/T17963.hs b/testsuite/tests/polykinds/T17963.hs new file mode 100644 index 0000000000..ed609384d6 --- /dev/null +++ b/testsuite/tests/polykinds/T17963.hs @@ -0,0 +1,15 @@ +{-# Language DataKinds #-} +{-# Language PolyKinds #-} +{-# Language RankNTypes #-} +{-# Language StandaloneKindSignatures #-} +{-# Language TypeApplications #-} +module T17963 where + +import GHC.Types (Constraint, Type, TYPE, RuntimeRep(..)) + +type Cat :: forall (rep :: RuntimeRep). TYPE rep -> Type +type Cat ob = ob -> ob -> Type + +type Category' :: forall rep (ob :: TYPE rep). Cat @rep ob -> Constraint +class Category' (cat :: Cat @rep ob) where + id' :: forall a. cat a a diff --git a/testsuite/tests/polykinds/T17963.stderr b/testsuite/tests/polykinds/T17963.stderr new file mode 100644 index 0000000000..84201e0de4 --- /dev/null +++ b/testsuite/tests/polykinds/T17963.stderr @@ -0,0 +1,13 @@ + +T17963.hs:15:23: error: + • Couldn't match a lifted type with an unlifted type + ‘rep1’ is a rigid type variable bound by + the class declaration for ‘Category'’ + at T17963.hs:13:27-29 + When matching kinds + k0 :: * + ob :: TYPE rep1 + Expected kind ‘ob’, but ‘a’ has kind ‘k0’ + • In the first argument of ‘cat’, namely ‘a’ + In the type signature: id' :: forall a. cat a a + In the class declaration for ‘Category'’ diff --git a/testsuite/tests/polykinds/all.T b/testsuite/tests/polykinds/all.T index 454be6fc62..f77af8972c 100644 --- a/testsuite/tests/polykinds/all.T +++ b/testsuite/tests/polykinds/all.T @@ -216,3 +216,4 @@ test('T16263', normal, compile_fail, ['']) test('T16902', normal, compile_fail, ['']) test('CuskFam', normal, compile, ['']) test('T17841', normal, compile_fail, ['']) +test('T17963', normal, compile_fail, ['']) |