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-rw-r--r--testsuite/tests/deSugar/should_compile/ds028.hs13
1 files changed, 13 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_compile/ds028.hs b/testsuite/tests/deSugar/should_compile/ds028.hs
new file mode 100644
index 0000000000..4c7944aa39
--- /dev/null
+++ b/testsuite/tests/deSugar/should_compile/ds028.hs
@@ -0,0 +1,13 @@
+-- !!! ds028: failable pats in top row
+
+module ShouldCompile where
+
+
+-- when the first row of pats doesn't have convenient
+-- variables to grab...
+
+mAp f [] = []
+mAp f (x:xs) = f x : mAp f xs
+
+True |||| _ = True
+False |||| x = x