Issue 988: Compile time error missing for const class / non-final instance variables

compiler/lib/implementation/regexp.dart

Index: compiler/lib/implementation/regexp.dart
diff --git a/compiler/lib/implementation/regexp.dart b/compiler/lib/implementation/regexp.dart
index c63046590014118929aff6f3e9739941806a9c65..1ccff95bfb7181cffc0432a572a70100269ebb09 100644
--- a/compiler/lib/implementation/regexp.dart
+++ b/compiler/lib/implementation/regexp.dart
@@ -64,8 +64,8 @@ class JSSyntaxMatch implements Match {
 }
 
 class _LazyAllMatches implements Collection<Match> {
-  JSSyntaxRegExp _regexp;
-  String _str;
+  final JSSyntaxRegExp _regexp;
+  final String _str;
 
   const _LazyAllMatches(this._regexp, this._str);