Detect recursion during compilation of const constructors.

runtime/vm/object.cc

 // Copyright (c) 2012, 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/object.h"
 
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 3575 matching lines @@
   result.set_kind(kind);
   result.set_is_static(is_static);
   result.set_is_const(is_const);
   result.set_token_index(token_index);
   result.set_end_token_index(token_index);
   result.set_num_fixed_parameters(0);
   result.set_num_optional_parameters(0);
   result.set_usage_counter(0);
   result.set_deoptimization_counter(0);
   result.set_is_optimizable(true);
+  result.set_is_compiling(false);
   return result.raw();
 }
 
 
 RawFunction* Function::NewClosureFunction(const String& name,
                                           const Function& parent,
                                           intptr_t token_index) {
   ASSERT(!parent.IsNull());
   const Class& parent_class = Class::Handle(parent.owner());
   ASSERT(!parent_class.IsNull());
@@ skipping 5440 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart