From b3d6306759e450a5d004b6581e0bf3b891b93fa5 Mon Sep 17 00:00:00 2001
From: qunyanm <unknown>
Date: Fri, 26 Feb 2016 12:37:46 -0800
Subject: Fix issue 138. Allow parenthese with the nullary constructor in
 "case" of a match statement and match expression.

---
 Test/dafny4/Bug138.dfy        | 22 ++++++++++++++++++++++
 Test/dafny4/Bug138.dfy.expect |  2 ++
 2 files changed, 24 insertions(+)
 create mode 100644 Test/dafny4/Bug138.dfy
 create mode 100644 Test/dafny4/Bug138.dfy.expect

(limited to 'Test')

diff --git a/Test/dafny4/Bug138.dfy b/Test/dafny4/Bug138.dfy
new file mode 100644
index 00000000..db0e54ef
--- /dev/null
+++ b/Test/dafny4/Bug138.dfy
@@ -0,0 +1,22 @@
+// RUN: %dafny /compile:0  "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+
+datatype List = Nil | Cons(int, List)
+
+method R(xs: List)
+{
+  match xs
+  case Nil() =>    // currently produces a parsing error, but shouldn't
+  case Cons(x, Nil()) =>  // currently allowed
+  case Cons(x, Cons(y, tail)) =>
+}
+
+function F(xs: List) : int
+{
+  match xs
+  case Nil() =>  0  // currently produces a parsing error, but shouldn't
+  case Cons(x, Nil()) => 1 // currently allowed
+  case Cons(x, Cons(y, tail)) => 2
+}
+
+
diff --git a/Test/dafny4/Bug138.dfy.expect b/Test/dafny4/Bug138.dfy.expect
new file mode 100644
index 00000000..52595bf9
--- /dev/null
+++ b/Test/dafny4/Bug138.dfy.expect
@@ -0,0 +1,2 @@
+
+Dafny program verifier finished with 3 verified, 0 errors
-- 
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