diff options
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/tcfail023.hs')
| -rw-r--r-- | testsuite/tests/typecheck/should_fail/tcfail023.hs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/testsuite/tests/typecheck/should_fail/tcfail023.hs b/testsuite/tests/typecheck/should_fail/tcfail023.hs new file mode 100644 index 0000000000..74bcaf3a4b --- /dev/null +++ b/testsuite/tests/typecheck/should_fail/tcfail023.hs @@ -0,0 +1,16 @@ +module ShouldFail where + +-- !!! Duplicate instances + +data B = C + +class A a where + op :: a -> Bool + +instance A B where + op C = True + +instance A B where + op C = True + + |