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-rw-r--r--testsuite/tests/deSugar/should_compile/ds042.hs8
1 files changed, 8 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_compile/ds042.hs b/testsuite/tests/deSugar/should_compile/ds042.hs
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+++ b/testsuite/tests/deSugar/should_compile/ds042.hs
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+-- !!! Guard on a tuple pattern, broke 4.01 due to the
+-- !!! special handling of unboxed tuples in desugarer.
+module ShouldCompile where
+
+f :: Int -> (Int,Int)
+f x =
+ case f x of
+ (a,b) | a > 0 -> f (x-1)