diff options
Diffstat (limited to 'testsuite/tests/overloadedrecflds/should_fail/overloadedrecfldsfail01c.hs')
| -rw-r--r-- | testsuite/tests/overloadedrecflds/should_fail/overloadedrecfldsfail01c.hs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/overloadedrecflds/should_fail/overloadedrecfldsfail01c.hs b/testsuite/tests/overloadedrecflds/should_fail/overloadedrecfldsfail01c.hs new file mode 100644 index 0000000000..cfa079e7b9 --- /dev/null +++ b/testsuite/tests/overloadedrecflds/should_fail/overloadedrecfldsfail01c.hs @@ -0,0 +1,13 @@ +-- Test ambiguous updates are rejected with appropriate error messages + +{-# LANGUAGE DuplicateRecordFields #-} + +module OverloadedRecFieldsFail1c where + +data R = MkR { w :: Bool, x :: Int, y :: Bool } +data S = MkS { w :: Bool, x :: Int, y :: Bool } +data T = MkT { x :: Int, z :: Bool } +data U = MkU { y :: Bool } + +-- User-specified type does not have these fields +upd3 r = r { w = True, x = 3, y = True } :: U |