diff --git a/pom.xml b/pom.xml
index c15fe3582559a9fa0ff2ba54cf195b9e3d0b64f6..55e12c6c03d5bbf7ebc3a4399171bbd7efc13913 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 	<groupId>com.taobao.util</groupId>
 	<artifactId>taobao-express</artifactId>
 	<packaging>jar</packaging>
-	<version>3.1.6</version>
+	<version>3.1.7</version>
 	<name>taobao-express</name>
 	
 	<dependencies>
diff --git a/src/main/java/com/ql/util/express/InstructionSet.java b/src/main/java/com/ql/util/express/InstructionSet.java
index 517231a1631202a83b3b63c42a47dabc38249805..af914fefb2c931d97b0ef9ceb543513d4ee9d18e 100644
--- a/src/main/java/com/ql/util/express/InstructionSet.java
+++ b/src/main/java/com/ql/util/express/InstructionSet.java
@@ -99,17 +99,19 @@ public class InstructionSet implements Serializable{
 			if (instruction instanceof InstructionOperator) {
 				String opName = ((InstructionOperator) instruction)
 						.getOperator().getName();
-				if (opName.equalsIgnoreCase("def")
-						|| opName.equalsIgnoreCase("exportDef")) {
-					String varLocalName = (String) ((InstructionConstData) instructionList[i - 1])
-							.getOperateData().getObject(null);
-					result.remove(varLocalName);
-				} else if (opName.equalsIgnoreCase("alias")
-						|| opName.equalsIgnoreCase("exportAlias")) {
-					String varLocalName = (String) ((InstructionConstData) instructionList[i - 2])
-							.getOperateData().getObject(null);
-					result.remove(varLocalName);
-				}
+				if(opName != null){//addOperator(op)中op.name有可能为空
+                    if (opName.equalsIgnoreCase("def")
+                            || opName.equalsIgnoreCase("exportDef")) {
+                        String varLocalName = (String) ((InstructionConstData) instructionList[i - 1])
+                                .getOperateData().getObject(null);
+                        result.remove(varLocalName);
+                    } else if (opName.equalsIgnoreCase("alias")
+                            || opName.equalsIgnoreCase("exportAlias")) {
+                        String varLocalName = (String) ((InstructionConstData) instructionList[i - 2])
+                                .getOperateData().getObject(null);
+                        result.remove(varLocalName);
+                    }
+                }
 			}
 		}
 	  return result.keySet().toArray(new String[0]);
diff --git a/src/test/java/com/ql/util/express/example/ArgumentTypeMismatchTest.java b/src/test/java/com/ql/util/express/example/ArgumentTypeMismatchTest.java
index bf6d67a9c6ae0b41a08e5b784daa33f5aa103d9a..5834217746220e01faf0046419dfec431f8ca41a 100644
--- a/src/test/java/com/ql/util/express/example/ArgumentTypeMismatchTest.java
+++ b/src/test/java/com/ql/util/express/example/ArgumentTypeMismatchTest.java
@@ -1,9 +1,9 @@
 package com.ql.util.express.example;
 
-import com.ql.util.express.DefaultContext;
-import com.ql.util.express.ExpressRunner;
-import com.ql.util.express.IExpressContext;
-import com.ql.util.express.Operator;
+import com.ql.util.express.*;
+import com.ql.util.express.instruction.op.OperatorBase;
+import org.apache.commons.lang.builder.ToStringBuilder;
+import org.apache.commons.lang.builder.ToStringStyle;
 import org.junit.Test;
 
 /**
@@ -60,4 +60,50 @@ public class ArgumentTypeMismatchTest {
         }
         System.out.print("test ok!");
     }
+    
+    @Test
+    public void test3() throws Exception {
+        ExpressRunner runner = new ExpressRunner();
+        runner.addFunction("abc", new Operator() {
+            @Override
+            public Object executeInner(Object[] list) throws Exception {
+                Long paramA = Long.valueOf(list[0].toString());
+                Integer paramB = Integer.valueOf(list[1].toString());
+                String paramC = list[2].toString();
+                singleton.functionABC(paramA, paramB, paramC);
+                return null;
+            }
+        });
+        
+        OperatorBase function = runner.getFunciton("abc");
+        System.out.println("function = " + ToStringBuilder.reflectionToString(function, ToStringStyle.MULTI_LINE_STYLE));
+        
+        String exp = "abc(a,b,c)";
+        IExpressContext<String, Object> context = new DefaultContext<String, Object>();
+        context.put("a", "1");
+        context.put("b", "2");
+        context.put("c", "3");
+        
+        InstructionSet instructionSet = runner.getInstructionSetFromLocalCache(exp);
+        String[] outFunctionNames = runner.getOutFunctionNames(exp);
+        String[] outVarNames = runner.getOutVarNames(exp);
+        System.out.println("before execute instructionSet = " + instructionSet);
+        System.out.println("outFunctionNames = " + ToStringBuilder.reflectionToString(outFunctionNames, ToStringStyle.MULTI_LINE_STYLE));
+        System.out.println("outVarNames = " + ToStringBuilder.reflectionToString(outVarNames, ToStringStyle.MULTI_LINE_STYLE));
+        
+        try {
+            runner.execute(exp, context, null, false, false);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        
+        instructionSet = runner.getInstructionSetFromLocalCache(exp);
+        outFunctionNames = runner.getOutFunctionNames(exp);
+        outVarNames = runner.getOutVarNames(exp);
+        System.out.println("after execute instructionSet = " + instructionSet);
+        System.out.println("outFunctionNames = " + ToStringBuilder.reflectionToString(outFunctionNames, ToStringStyle.MULTI_LINE_STYLE));
+        System.out.println("outVarNames = " + ToStringBuilder.reflectionToString(outVarNames, ToStringStyle.MULTI_LINE_STYLE));
+        
+        System.out.println("test ok!");
+    }
 }