await in frog: partial support for try-catch blocks

frog/tests/await/src/Conditional3Test.dart

Index: frog/tests/await/src/Conditional3Test.dart
diff --git a/frog/tests/await/src/Conditional3Test.dart b/frog/tests/await/src/Conditional3Test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..ed8f5c783b5e502aa87fbce834ee57b60856a225
--- /dev/null
+++ b/frog/tests/await/src/Conditional3Test.dart
@@ -0,0 +1,20 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+// Await within a conditional - return on one branch.
+
+#import("await_test_helper.dart");
+
+main() {
+  var x;
+  if (x != null) {
+    final f = futureOf(4);
+    x = await f;
+  } else {
+    x = 0;
+    return; // assertion is skipped below. (This is a regression test for a bad
+            // CPS transformation bug.)
+  }
+  Expect.equals(3, x);
+}