Make sure that ParsedFunction holds onto zone handles.

runtime/vm/parser_test.cc

 // 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.
 
 
 #include "vm/ast_printer.h"
 #include "vm/class_finalizer.h"
 #include "vm/longjump.h"
 #include "vm/object.h"
 #include "vm/parser.h"
 #include "vm/symbols.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 
 void DumpFunction(const Library& lib, const char* cname, const char* fname) {
   const String& classname = String::Handle(Symbols::New(cname));
   Class& cls = Class::Handle(lib.LookupClass(classname));
   EXPECT(!cls.IsNull());
 
   String& funcname = String::Handle(String::New(fname));
-  Function& function = Function::Handle(cls.LookupStaticFunction(funcname));
+  Function& function = Function::ZoneHandle(cls.LookupStaticFunction(funcname));
   EXPECT(!function.IsNull());
 
   bool retval;
   Isolate* isolate = Isolate::Current();
   EXPECT(isolate != NULL);
   LongJump* base = isolate->long_jump_base();
   LongJump jump;
   isolate->set_long_jump_base(&jump);
   if (setjmp(*jump.Set()) == 0) {
     ParsedFunction* parsed_function = new ParsedFunction(function);
@@ skipping 126 matching lines @@
   Parser::ParseCompilationUnit(lib, script);
   EXPECT(ClassFinalizer::FinalizePendingClasses());
 
   DumpFunction(lib, "A", "foo");
   DumpFunction(lib, "A", "bar");
   DumpFunction(lib, "A", "baz");
   DumpFunction(lib, "B", "bam");
 }
 
 }  // namespace dart