[project @ 1997-09-03 23:36:28 by sof]

new desugar regr. test

diff --git a/ghc/tests/deSugar/should_compile/ds041.hs b/ghc/tests/deSugar/should_compile/ds041.hs
new file mode 100644 (file)
index 0000000..072ed89
--- /dev/null
+++ b/ghc/tests/deSugar/should_compile/ds041.hs
@@ -0,0 +1,16 @@
+{- In 2.05 this one crashed with
+
+       Fail: "basicTypes/Id.lhs", line 990: incomplete pattern(s) 
+               to match in function "dataConFieldLabels"
+
+   Reason: dsExpr (RecordCon ...) didn't extract 
+          the constructor properly.
+-}
+
+module Bug where
+
+data Eq a => Foo a = Foo { x :: a }
+
+foo :: Eq a => Foo a
+foo = Foo{}
+