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authorsewardj <unknown>2001-06-20 16:13:07 +0000
committersewardj <unknown>2001-06-20 16:13:07 +0000
commitec4b44372926ac4b7df577d7385b58f0dffe8039 (patch)
tree48d45be2d40f9ff0fe62786d2af14e6a449d48d6 /testsuite/tests/ghc-regress/typecheck/should_compile/tc043.hs
parentf888eb872de80350cd4af0ea3962892a0185f750 (diff)
downloadhaskell-ec4b44372926ac4b7df577d7385b58f0dffe8039.tar.gz
[project @ 2001-06-20 16:13:06 by sewardj]
Quite a significant number of your typechecker tests are belong to fptools/testsuite.
Diffstat (limited to 'testsuite/tests/ghc-regress/typecheck/should_compile/tc043.hs')
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diff --git a/testsuite/tests/ghc-regress/typecheck/should_compile/tc043.hs b/testsuite/tests/ghc-regress/typecheck/should_compile/tc043.hs
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+++ b/testsuite/tests/ghc-regress/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