Fixed parsing of parameterized type test assert statement in production mode.

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
===================================================================
--- runtime/vm/parser.cc	(revision 11730)
+++ runtime/vm/parser.cc	(working copy)
@@ -9343,8 +9343,16 @@
   while (((min_prec <= Token::Precedence(CurrentToken())) &&
       (Token::Precedence(CurrentToken()) <= max_prec)) ||
       IsLiteral("as")) {
-    ConsumeToken();
-    SkipUnaryExpr();
+    if (CurrentToken() == Token::kIS) {

[hausner, 2012/08/31 23:31:35]

I think there is another bug here. After the keyword 'as' we also need to skip a
type, not a unary expression. E.g:

assert((e as List<int>).length == 10);

If we don't have any tests for this, it would be good to add one and run it with
assertions enabled and disabled, so we both parse the expression (if assertions
are enabled) and skip the expression (if assertions are disabled).

+      ConsumeToken();
+      if (CurrentToken() == Token::kNOT) {
+        ConsumeToken();
+      }
+      SkipType(false);
+    } else {
+      ConsumeToken();
+      SkipUnaryExpr();
+    }
   }
 }