diff --git a/include/CrossLang.hpp b/include/CrossLang.hpp
index b4f8a95..cb803e3 100644
--- a/include/CrossLang.hpp
+++ b/include/CrossLang.hpp
@@ -664,7 +664,8 @@ typedef enum {
     PUSHBREAK,
     PUSHCONTINUE,
     JMPIFBREAK,
-    JMPIFCONTINUE
+    JMPIFCONTINUE,
+    JMPIFDEFINED
 } Instruction;
 /**
  * @brief Base type for bytecode instruction
@@ -1274,6 +1275,10 @@ constexpr std::string_view RelativePathExpression = "relativePathExpression";
  * @brief await expression for async/await
  */
 constexpr std::string_view AwaitExpression = "awaitExpression";
+/**
+ * @brief ?? operator
+ */
+constexpr std::string_view NullCoalescingExpression = "nullCoalescingExpression";
 /**
  * @brief Advanced AST node
  * 
@@ -1346,6 +1351,7 @@ class Parser {
     SyntaxNode ParseFactor();
     SyntaxNode ParseValue();
     SyntaxNode ParseUnary();
+    SyntaxNode ParseNullCoalescing();
     void ParseHtml(std::vector<SyntaxNode>& nodes,std::string var);
     GC* gc;
     TRootEnvironment* env;
@@ -2254,6 +2260,7 @@ class GC {
             bool ExecuteMethod2(GC* gc, TObject instance, std::string key, std::vector<TObject> args);
         protected:
             static void* ThreadCallback(void* ptr);
+            bool JumpIfDefined(GC* gc);
             bool Add(GC* gc);
             bool Sub(GC* gc);
             bool Times(GC* gc);
diff --git a/src/compiler/codegen.cpp b/src/compiler/codegen.cpp
index 28e4dca..760e5b6 100644
--- a/src/compiler/codegen.cpp
+++ b/src/compiler/codegen.cpp
@@ -521,7 +521,18 @@ namespace Tesses::CrossLang
             TWO_EXPR(NotEqualsExpression, NEQ)
             TWO_EXPR(EqualsExpression, EQ)
             TWO_EXPR(XOrExpression, XOR)
-            if(adv.nodeName == ClassStatement && adv.nodes.size() >= 3 && std::holds_alternative<std::string>(adv.nodes[0]))
+            if(adv.nodeName == NullCoalescingExpression && adv.nodes.size() == 2)
+            {
+                uint32_t ifId = NewId();
+                std::string ifIdTrue = "__compGenTrue";
+                ifIdTrue.append(std::to_string(ifId));
+                GenNode(instructions,adv.nodes[0],scope,contscope,brkscope,contI,brkI);
+                instructions.push_back(new JumpStyleInstruction(Instruction::JMPIFDEFINED, ifIdTrue));
+                GenNode(instructions,adv.nodes[1],scope,contscope,brkscope,contI,brkI);
+                instructions.push_back(new LabelInstruction(ifIdTrue));    
+                
+            }
+            else if(adv.nodeName == ClassStatement && adv.nodes.size() >= 3 && std::holds_alternative<std::string>(adv.nodes[0]))
             {
                 CodeGenClass cls;
                 cls.documentation = GetString(std::get<std::string>(adv.nodes[0]));
diff --git a/src/compiler/lexer.cpp b/src/compiler/lexer.cpp
index fb63cd9..293de2c 100644
--- a/src/compiler/lexer.cpp
+++ b/src/compiler/lexer.cpp
@@ -579,6 +579,7 @@ namespace Tesses::CrossLang
                     break;
                 case '<':
                 case '>':
+                case '?':
                     if(peek == read)
                     {
                         Flush();
@@ -670,7 +671,6 @@ namespace Tesses::CrossLang
                 case ':':
                 case ';':
                 case ',':
-                case '?':
                     Flush();
                     Symbol({read});
                     break;
diff --git a/src/compiler/parser.cpp b/src/compiler/parser.cpp
index 5113747..95d7500 100644
--- a/src/compiler/parser.cpp
+++ b/src/compiler/parser.cpp
@@ -1088,6 +1088,10 @@ namespace Tesses::CrossLang
         {
             return AdvancedSyntaxNode::Create(CompoundAssignExpression,true,{AdvancedSyntaxNode::Create(XOrExpression,true,{ node,ParseAssignment()})});
         }
+        else if(IsSymbol("?\?="))
+        {
+            return AdvancedSyntaxNode::Create(CompoundAssignExpression,true,{AdvancedSyntaxNode::Create(NullCoalescingExpression,true,{ node,ParseAssignment()})});
+        }
         return node;
     }
     SyntaxNode Parser::ParseNode(bool isRoot)
@@ -1547,9 +1551,18 @@ namespace Tesses::CrossLang
         EnsureSymbol(";");
         return v;
     }
+    SyntaxNode Parser::ParseNullCoalescing()
+    {
+        SyntaxNode expr = ParseLOr();
+        while(IsSymbol("?\?"))
+        {
+            expr = AdvancedSyntaxNode::Create(NullCoalescingExpression,true,{expr,ParseLOr()});
+        }
+        return expr;
+    }
     SyntaxNode Parser::ParseTernary()
     {
-        SyntaxNode node = ParseLOr();
+        SyntaxNode node = ParseNullCoalescing();
         if(IsSymbol("?"))
         {
             auto yes = ParseTernary();
diff --git a/src/vm/vm.cpp b/src/vm/vm.cpp
index 5bd8da3..37a64d2 100644
--- a/src/vm/vm.cpp
+++ b/src/vm/vm.cpp
@@ -6163,6 +6163,32 @@ namespace Tesses::CrossLang {
         }
         return false;
     }
+    bool InterperterThread::JumpIfDefined(GC* gc)
+    {
+        
+        std::vector<CallStackEntry*>& cse=this->call_stack_entries;
+        auto stk = cse.back();
+
+        if(stk->ip + 4 <= stk->callable->closure->code.size())
+        {
+            uint32_t n=BitConverter::ToUint32BE(stk->callable->closure->code[stk->ip]);
+                            
+            GCList ls(gc);
+            auto _res2 = stk->Pop(ls);
+                                
+            stk->ip = stk->ip + 4;
+            if(!std::holds_alternative<Undefined>(_res2) && !std::holds_alternative<std::nullptr_t>(_res2))
+            {
+                stk->ip = n;
+                stk->Push(gc,_res2);
+            }
+                            
+                            
+        }
+        else
+            throw VMException("Can't read jmpifdefined pc.");
+        return false;
+    }
     bool InterperterThread::JumpIfBreak(GC* gc)
     {
         
diff --git a/src/vm/vm_opcode_table.h b/src/vm/vm_opcode_table.h
index f1ac19d..5beaa6a 100644
--- a/src/vm/vm_opcode_table.h
+++ b/src/vm/vm_opcode_table.h
@@ -1,3 +1,260 @@
 #if defined(VM_OPCODE_TABLE_INLINE)
-static opcode opcodes[256]={&InterperterThread::Add, &InterperterThread::Sub, &InterperterThread::Times, &InterperterThread::Divide, &InterperterThread::Mod, &InterperterThread::LShift, &InterperterThread::RShift, &InterperterThread::BOr, &InterperterThread::BAnd, &InterperterThread::BNot, &InterperterThread::Lt, &InterperterThread::Gt, &InterperterThread::Lte, &InterperterThread::Gte, &InterperterThread::Eq, &InterperterThread::NEq, &InterperterThread::LNot, &InterperterThread::Neg, &InterperterThread::XOr, &InterperterThread::Pop, &InterperterThread::Dup,&InterperterThread::Nop, &InterperterThread::PushClosure, &InterperterThread::CreateDictionary, &InterperterThread::CreateArray, &InterperterThread::AppendList, &InterperterThread::AppendDictionary, &InterperterThread::PushResource, &InterperterThread::PushLong, &InterperterThread::PushChar, &InterperterThread::PushDouble, &InterperterThread::PushString, &InterperterThread::PushNull, &InterperterThread::PushUndefined, &InterperterThread::ScopeBegin, &InterperterThread::ScopeEnd, &InterperterThread::ScopeEndTimes, &InterperterThread::PushFalse, &InterperterThread::PushTrue, &InterperterThread::SetVariable, &InterperterThread::GetVariable, &InterperterThread::DeclareVariable, &InterperterThread::SetField, &InterperterThread::GetField, &InterperterThread::ExecuteFunction, &InterperterThread::ExecuteMethod, &InterperterThread::Return, &InterperterThread::JumpConditional, &InterperterThread::Jump, &InterperterThread::JumpUndefined, &InterperterThread::Defer, &InterperterThread::TryCatch, &InterperterThread::Throw, &InterperterThread::PushScopelessClosure, &InterperterThread::Yield, &InterperterThread::PushRootPath, &InterperterThread::PushRelativePath, &InterperterThread::Breakpoint, &InterperterThread::PushBreak, &InterperterThread::PushContinue, &InterperterThread::JumpIfBreak, &InterperterThread::JumpIfContinue, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal, &InterperterThread::Illegal};
+static opcode opcodes[256]={
+    &InterperterThread::Add,
+    &InterperterThread::Sub,
+    &InterperterThread::Times,
+    &InterperterThread::Divide,
+    &InterperterThread::Mod,
+    &InterperterThread::LShift,
+    &InterperterThread::RShift,
+    &InterperterThread::BOr,
+    &InterperterThread::BAnd,
+    &InterperterThread::BNot,
+    &InterperterThread::Lt,
+    &InterperterThread::Gt,
+    &InterperterThread::Lte,
+    &InterperterThread::Gte,
+    &InterperterThread::Eq,
+    &InterperterThread::NEq,
+    &InterperterThread::LNot,
+    &InterperterThread::Neg,
+    &InterperterThread::XOr,
+    &InterperterThread::Pop,
+    &InterperterThread::Dup,
+    &InterperterThread::Nop,
+    &InterperterThread::PushClosure,
+    &InterperterThread::CreateDictionary,
+    &InterperterThread::CreateArray,
+    &InterperterThread::AppendList,
+    &InterperterThread::AppendDictionary,
+    &InterperterThread::PushResource,
+    &InterperterThread::PushLong,
+    &InterperterThread::PushChar,
+    &InterperterThread::PushDouble,
+    &InterperterThread::PushString,
+    &InterperterThread::PushNull,
+    &InterperterThread::PushUndefined,
+    &InterperterThread::ScopeBegin,
+    &InterperterThread::ScopeEnd,
+    &InterperterThread::ScopeEndTimes,
+    &InterperterThread::PushFalse,
+    &InterperterThread::PushTrue,
+    &InterperterThread::SetVariable,
+    &InterperterThread::GetVariable,
+    &InterperterThread::DeclareVariable,
+    &InterperterThread::SetField,
+    &InterperterThread::GetField,
+    &InterperterThread::ExecuteFunction,
+    &InterperterThread::ExecuteMethod,
+    &InterperterThread::Return,
+    &InterperterThread::JumpConditional,
+    &InterperterThread::Jump,
+    &InterperterThread::JumpUndefined,
+    &InterperterThread::Defer,
+    &InterperterThread::TryCatch,
+    &InterperterThread::Throw,
+    &InterperterThread::PushScopelessClosure,
+    &InterperterThread::Yield,
+    &InterperterThread::PushRootPath,
+    &InterperterThread::PushRelativePath,
+    &InterperterThread::Breakpoint,
+    &InterperterThread::PushBreak,
+    &InterperterThread::PushContinue,
+    &InterperterThread::JumpIfBreak,
+    &InterperterThread::JumpIfContinue,
+    &InterperterThread::JumpIfDefined,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+    &InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal,
+	&InterperterThread::Illegal
+};
 #endif