[Git][ghc/ghc][master] Add test case for #17186.

[Marge Bot]

 Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC


Commits:
fa344d33 by Richard Eisenberg at 2020-11-10T10:28:10-05:00
Add test case for #17186.

This got fixed sometime recently; not worth it trying to
figure out which commit.

- - - - -


2 changed files:

- + testsuite/tests/typecheck/should_compile/T17186.hs
- testsuite/tests/typecheck/should_compile/all.T


Changes:

=====================================
testsuite/tests/typecheck/should_compile/T17186.hs
=====================================
@@ -0,0 +1,17 @@
+{-# LANGUAGE DataKinds              #-}
+{-# LANGUAGE FlexibleContexts       #-}
+{-# LANGUAGE PolyKinds              #-}
+{-# LANGUAGE TypeFamilyDependencies #-}
+{-# LANGUAGE TypeOperators, AllowAmbiguousTypes          #-}
+
+module T17186 where
+
+-- This test is significantly abbreviated from what was posted; see
+-- #16512 for more context.
+
+type family Dim v
+
+type family v `OfDim` (n :: Dim v) = r | r -> n
+
+(!*^) :: Dim m `OfDim` j -> Dim m `OfDim` i
+(!*^) = undefined


=====================================
testsuite/tests/typecheck/should_compile/all.T
=====================================
@@ -728,4 +728,4 @@ test('T18831', normal, compile, [''])
 test('T18920', normal, compile, [''])
 test('T15942', normal, compile, [''])
 test('ClassDefaultInHsBoot', [extra_files(['ClassDefaultInHsBootA1.hs','ClassDefaultInHsBootA2.hs','ClassDefaultInHsBootA2.hs-boot','ClassDefaultInHsBootA3.hs'])], multimod_compile, ['ClassDefaultInHsBoot', '-v0'])
-
+test('T17186', normal, compile, [''])



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fa344d33dba71f31f55269c5fc733daa3830073a

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fa344d33dba71f31f55269c5fc733daa3830073a
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