diff options
Diffstat (limited to 'testsuite/tests/typecheck/should_compile/T14333.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/T14333.hs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/T14333.hs b/testsuite/tests/typecheck/should_compile/T14333.hs new file mode 100644 index 0000000000..f4cd3bdf2b --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/T14333.hs @@ -0,0 +1,20 @@ +module T14333 where + +import Data.Coerce + +bad :: Coercible (a b) (c d) => c d -> a b +bad = coerce + +bad2 :: Coercible (c d) (a b) => c d -> a b +bad2 = coerce + +bad3 :: Coercible (a b) b => b -> a b +bad3 = coerce + +bad4 :: Coercible b (a b) => b -> a b +bad4 = coerce + +newtype Id a = MkId a + +foo :: Id Int +foo = bad3 (3 :: Int) |