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Diffstat (limited to 'testsuite/tests/typecheck/should_compile/tc142.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_compile/tc142.hs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_compile/tc142.hs b/testsuite/tests/typecheck/should_compile/tc142.hs new file mode 100644 index 0000000000..8621710038 --- /dev/null +++ b/testsuite/tests/typecheck/should_compile/tc142.hs @@ -0,0 +1,11 @@ +-- !!! Legitimate re-use of prelude class-method name (==) +-- Used not to be legal, but a late H98 change made it legal +-- +module ShouldFail where + +data NUM = ONE | TWO +class EQ a where + (==) :: a -> a -> Bool + +instance EQ NUM where + a == b = True |