Detect circular dependencies in compile time constants

runtime/vm/parser.h

Index: runtime/vm/parser.h
===================================================================
--- runtime/vm/parser.h	(revision 26486)
+++ runtime/vm/parser.h	(working copy)
@@ -182,6 +182,7 @@
 
   Parser(const Script& script, const Library& library, intptr_t token_pos);
   Parser(const Script& script, ParsedFunction* function, intptr_t token_pos);
+  ~Parser();
 
   // The function for which we will generate code.
   const Function& current_function() const;
@@ -320,6 +321,8 @@
       const Error& prev_error, intptr_t token_pos, const char* format, ...)
       PRINTF_ATTRIBUTE(4, 5);
 
+  void CheckRecursiveInvocation();
+
   const Instance& EvaluateConstExpr(AstNode* expr);
   AstNode* RunStaticFieldInitializer(const Field& field);
   RawObject* EvaluateConstConstructorCall(
@@ -693,6 +696,8 @@
   intptr_t AllocateTryIndex() { return ++last_used_try_index_; }
   intptr_t last_used_try_index_;
 
+  bool unregister_pending_function_;
+
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };