diff options
Diffstat (limited to 'testsuite/tests/typecheck/should_compile/tc043.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/tc043.hs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc043.hs b/testsuite/tests/typecheck/should_compile/tc043.hs new file mode 100644 index 0000000000..2a2e5f050c --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/tc043.hs @@ -0,0 +1,18 @@ +module ShouldSucceed where + +-- !!! another simple test of class and instance code. + +class A a where + op1 :: a + +instance A Int where + op1 = 2 + +f x = op1 + +class B b where + op2 :: b -> Int + +instance (B a) => B [a] where + op2 [] = 0 + op2 (x:xs) = 1 + op2 xs |