From: sof <unknown>
Date: Sat, 31 Jul 1999 18:43:48 +0000 (+0000)
Subject: [project @ 1999-07-31 18:43:48 by sof]
X-Git-Tag: Approximately_9120_patches~5923
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=90d010080d5554c20e2d7cd643f2e94025db5f8d;p=ghc-hetmet.git

[project @ 1999-07-31 18:43:48 by sof]
nullary recpat reg. test
---

diff --git a/ghc/tests/deSugar/should_compile/ds047.hs b/ghc/tests/deSugar/should_compile/ds047.hs
new file mode 100644
index 0000000..90078e0
--- /dev/null
+++ b/ghc/tests/deSugar/should_compile/ds047.hs
@@ -0,0 +1,9 @@
+-- !!! Nullary rec-pats for constructors that hasn't got any labelled
+-- !!! fields is legal Haskell, and requires extra care in the desugarer.
+module Test where
+
+data X = X Int [Int]
+
+f :: X -> Int
+f (X _ []) = 0
+f X{}      = 1